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70399543 = 312270953
BaseRepresentation
bin1000011001000…
…11011000110111
311220110200000111
410030203120313
5121010241133
610552523451
71513246324
oct414433067
9156420014
1070399543
1136814245
121b6b0587
131177b646
1494c7b4b
1562a91cd
hex4323637

70399543 has 4 divisors (see below), whose sum is σ = 72670528. Its totient is φ = 68128560.

The previous prime is 70399487. The next prime is 70399591. The reversal of 70399543 is 34599307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34599307 = 197175631.

It is a cyclic number.

It is not a de Polignac number, because 70399543 - 29 = 70399031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70399496 and 70399505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70390543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135446 + ... + 1135507.

It is an arithmetic number, because the mean of its divisors is an integer number (18167632).

Almost surely, 270399543 is an apocalyptic number.

70399543 is a deficient number, since it is larger than the sum of its proper divisors (2270985).

70399543 is a wasteful number, since it uses less digits than its factorization.

70399543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270984.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 70399543 is about 8390.4435520418. The cubic root of 70399543 is about 412.9111527109.

The spelling of 70399543 in words is "seventy million, three hundred ninety-nine thousand, five hundred forty-three".

Divisors: 1 31 2270953 70399543