79986903 has 32 divisors (see below), whose sum is σ = 116505600. Its totient is φ = 48646656.

The previous prime is 79986889. The next prime is 79986919. The reversal of 79986903 is 30968997.

It is not a de Polignac number, because 79986903 - 2⁶ = 79986839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79986943) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 195363 + ... + 195771.

It is an arithmetic number, because the mean of its divisors is an integer number (3640800).

Almost surely, 2^79986903 is an apocalyptic number.

79986903 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

79986903 is a deficient number, since it is larger than the sum of its proper divisors (36518697).

79986903 is a wasteful number, since it uses less digits than its factorization.

79986903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 79986903 is about 8943.5397354739. The cubic root of 79986903 is about 430.8634228638.

The spelling of 79986903 in words is "seventy-nine million, nine hundred eighty-six thousand, nine hundred three".