79987402 has 8 divisors (see below), whose sum is σ = 130888512. Its totient is φ = 36357900.

The previous prime is 79987367. The next prime is 79987459. The reversal of 79987402 is 20478997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1817874 + ... + 1817917.

It is an arithmetic number, because the mean of its divisors is an integer number (16361064).

Almost surely, 2^79987402 is an apocalyptic number.

79987402 is a deficient number, since it is larger than the sum of its proper divisors (50901110).

79987402 is a wasteful number, since it uses less digits than its factorization.

79987402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635804.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 79987402 is about 8943.5676326620. The cubic root of 79987402 is about 430.8643188455.

It can be divided in two parts, 7998 and 7402, that added together give a triangular number (15400 = T₁₇₅).

The spelling of 79987402 in words is "seventy-nine million, nine hundred eighty-seven thousand, four hundred two".