79555963 has 4 divisors (see below), whose sum is σ = 79781688. Its totient is φ = 79330240.

The previous prime is 79555933. The next prime is 79555979. The reversal of 79555963 is 36955597.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79555963 - 2¹³ = 79547771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79555933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112333 + ... + 113038.

It is an arithmetic number, because the mean of its divisors is an integer number (19945422).

Almost surely, 2^79555963 is an apocalyptic number.

79555963 is a deficient number, since it is larger than the sum of its proper divisors (225725).

79555963 is a wasteful number, since it uses less digits than its factorization.

79555963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225724.

The product of its digits is 1275750, while the sum is 49.

The square root of 79555963 is about 8919.4149471812. The cubic root of 79555963 is about 430.0882512213.

The spelling of 79555963 in words is "seventy-nine million, five hundred fifty-five thousand, nine hundred sixty-three".