79801402 has 4 divisors (see below), whose sum is σ = 119702106. Its totient is φ = 39900700.

The previous prime is 79801399. The next prime is 79801433. The reversal of 79801402 is 20410897.

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., 71385601 + 8415801 = 8449^2 + 2901^2 .

It is a super-2 number, since 2×79801402² = 12736527522331208, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19950349 + ... + 19950352.

Almost surely, 2^79801402 is an apocalyptic number.

79801402 is a deficient number, since it is larger than the sum of its proper divisors (39900704).

79801402 is a wasteful number, since it uses less digits than its factorization.

79801402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39900703.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 79801402 is about 8933.1630456407. The cubic root of 79801402 is about 430.5300872017.

The spelling of 79801402 in words is "seventy-nine million, eight hundred one thousand, four hundred two".