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83430901 = 191436811
BaseRepresentation
bin1001111100100…
…00110111110101
312210222201200101
410332100313311
5132324242101
612140114101
72032102531
oct476206765
9183881611
1083430901
1143104964
1223b35931
1314391bc8
14b11abc1
1574d0401
hex4f90df5

83430901 has 4 divisors (see below), whose sum is σ = 83867904. Its totient is φ = 82993900.

The previous prime is 83430863. The next prime is 83430923. The reversal of 83430901 is 10903438.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83430901 - 217 = 83299829 is a prime.

It is a super-3 number, since 3×834309013 (a number of 25 digits) contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83430901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83430931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218215 + ... + 218596.

It is an arithmetic number, because the mean of its divisors is an integer number (20966976).

Almost surely, 283430901 is an apocalyptic number.

It is an amenable number.

83430901 is a deficient number, since it is larger than the sum of its proper divisors (437003).

83430901 is a wasteful number, since it uses less digits than its factorization.

83430901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437002.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 83430901 is about 9134.0517296543. The cubic root of 83430901 is about 436.9606322985.

The spelling of 83430901 in words is "eighty-three million, four hundred thirty thousand, nine hundred one".

Divisors: 1 191 436811 83430901