79850642 has 4 divisors (see below), whose sum is σ = 119775966. Its totient is φ = 39925320.

The previous prime is 79850627. The next prime is 79850651. The reversal of 79850642 is 24605897.

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

It can be written as a sum of positive squares in only one way, i.e., 78340201 + 1510441 = 8851^2 + 1229^2 .

It is a super-2 number, since 2×79850642² = 12752250055624328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79850642.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19962659 + ... + 19962662.

Almost surely, 2^79850642 is an apocalyptic number.

79850642 is a deficient number, since it is larger than the sum of its proper divisors (39925324).

79850642 is a wasteful number, since it uses less digits than its factorization.

79850642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39925323.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 79850642 is about 8935.9186433181. The cubic root of 79850642 is about 430.6186192419.

The spelling of 79850642 in words is "seventy-nine million, eight hundred fifty thousand, six hundred forty-two".