102439684 has 12 divisors (see below), whose sum is σ = 179587408. Its totient is φ = 51129000.

The previous prime is 102439661. The next prime is 102439693. The reversal of 102439684 is 486934201.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20142 + ... + 24709.

Almost surely, 2^102439684 is an apocalyptic number.

It is an amenable number.

102439684 is a deficient number, since it is larger than the sum of its proper divisors (77147724).

102439684 is a wasteful number, since it uses less digits than its factorization.

102439684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45426 (or 45424 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 102439684 is about 10121.2491323947. The cubic root of 102439684 is about 467.9032661003.

The spelling of 102439684 in words is "one hundred two million, four hundred thirty-nine thousand, six hundred eighty-four".