99979503 has 16 divisors (see below), whose sum is σ = 144600960. Its totient is φ = 61079904.

The previous prime is 99979493. The next prime is 99979507. The reversal of 99979503 is 30597999.

It is not a de Polignac number, because 99979503 - 2⁵ = 99979471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99979507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3801 + ... + 14642.

It is an arithmetic number, because the mean of its divisors is an integer number (9037560).

Almost surely, 2^99979503 is an apocalyptic number.

99979503 is a deficient number, since it is larger than the sum of its proper divisors (44621457).

99979503 is a wasteful number, since it uses less digits than its factorization.

99979503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18598.

The product of its (nonzero) digits is 688905, while the sum is 51.

The square root of 99979503 is about 9998.9750974787. The cubic root of 99979503 is about 464.1271683122.

The spelling of 99979503 in words is "ninety-nine million, nine hundred seventy-nine thousand, five hundred three".