Search a number
-
+
80038949 = 239334891
BaseRepresentation
bin1001100010101…
…00110000100101
312120121101210112
410301110300211
5130442221244
611535302405
71661214464
oct461246045
9176541715
1080038949
11411a84a1
122297aa05
1313775033
14a8b69db
15706039e
hex4c54c25

80038949 has 4 divisors (see below), whose sum is σ = 80374080. Its totient is φ = 79703820.

The previous prime is 80038943. The next prime is 80038951. The reversal of 80038949 is 94983008.

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 a de Polignac number, because none of the positive numbers 2k-80038949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80038943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167207 + ... + 167684.

It is an arithmetic number, because the mean of its divisors is an integer number (20093520).

Almost surely, 280038949 is an apocalyptic number.

It is an amenable number.

80038949 is a deficient number, since it is larger than the sum of its proper divisors (335131).

80038949 is a wasteful number, since it uses less digits than its factorization.

80038949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335130.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 80038949 is about 8946.4489603418. The cubic root of 80038949 is about 430.9568542250.

The spelling of 80038949 in words is "eighty million, thirty-eight thousand, nine hundred forty-nine".

Divisors: 1 239 334891 80038949