79043643 has 12 divisors (see below), whose sum is σ = 130484848. Its totient is φ = 45167760.

The previous prime is 79043641. The next prime is 79043683. The reversal of 79043643 is 34634097.

79043643 is a `hidden beast` number, since 7 + 9 + 0 + 4 + 3 + 643 = 666.

It is not a de Polignac number, because 79043643 - 2¹ = 79043641 is a prime.

It is a super-2 number, since 2×79043643² = 12495794997422898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79043598 and 79043607.

It is not an unprimeable number, because it can be changed into a prime (79043641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 627268 + ... + 627393.

Almost surely, 2^79043643 is an apocalyptic number.

79043643 is a deficient number, since it is larger than the sum of its proper divisors (51441205).

79043643 is a wasteful number, since it uses less digits than its factorization.

79043643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254674 (or 1254671 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 79043643 is about 8890.6491888950. The cubic root of 79043643 is about 429.1630429874.

The spelling of 79043643 in words is "seventy-nine million, forty-three thousand, six hundred forty-three".