79643398 has 8 divisors (see below), whose sum is σ = 121147920. Its totient is φ = 39260760.

The previous prime is 79643387. The next prime is 79643401. The reversal of 79643398 is 89334697.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280293 + ... + 280576.

It is an arithmetic number, because the mean of its divisors is an integer number (15143490).

Almost surely, 2^79643398 is an apocalyptic number.

79643398 is a deficient number, since it is larger than the sum of its proper divisors (41504522).

79643398 is a wasteful number, since it uses less digits than its factorization.

79643398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560942.

The product of its digits is 979776, while the sum is 49.

The square root of 79643398 is about 8924.3149877175. The cubic root of 79643398 is about 430.2457545974.

The spelling of 79643398 in words is "seventy-nine million, six hundred forty-three thousand, three hundred ninety-eight".