102499479 has 8 divisors (see below), whose sum is σ = 151851120. Its totient is φ = 68332968.

The previous prime is 102499417. The next prime is 102499489. The reversal of 102499479 is 974994201.

It is a happy number.

It is not a de Polignac number, because 102499479 - 2⁸ = 102499223 is a prime.

It is a super-2 number, since 2×102499479² = 21012286390542882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102499489) 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 7 ways as a sum of consecutive naturals, for example, 1898112 + ... + 1898165.

It is an arithmetic number, because the mean of its divisors is an integer number (18981390).

Almost surely, 2^102499479 is an apocalyptic number.

102499479 is a deficient number, since it is larger than the sum of its proper divisors (49351641).

102499479 is an equidigital number, since it uses as much as digits as its factorization.

102499479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796286 (or 3796280 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 102499479 is about 10124.2026352696. The cubic root of 102499479 is about 467.9942882275.

The spelling of 102499479 in words is "one hundred two million, four hundred ninety-nine thousand, four hundred seventy-nine".