79898311 has 4 divisors (see below), whose sum is σ = 80376912. Its totient is φ = 79419712.

The previous prime is 79898303. The next prime is 79898321. The reversal of 79898311 is 11389897.

79898311 = 313² + 314² + ... + 646².

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 79898311 - 2³ = 79898303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79898321) by changing a digit.

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, 239050 + ... + 239383.

It is an arithmetic number, because the mean of its divisors is an integer number (20094228).

Almost surely, 2^79898311 is an apocalyptic number.

79898311 is a deficient number, since it is larger than the sum of its proper divisors (478601).

79898311 is a wasteful number, since it uses less digits than its factorization.

79898311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478600.

The product of its digits is 108864, while the sum is 46.

The square root of 79898311 is about 8938.5855144984. The cubic root of 79898311 is about 430.7042920056.

The spelling of 79898311 in words is "seventy-nine million, eight hundred ninety-eight thousand, three hundred eleven".