102399964 has 6 divisors (see below), whose sum is σ = 179199944. Its totient is φ = 51199980.

The previous prime is 102399943. The next prime is 102399989. The reversal of 102399964 is 469993201.

It is a self number, because there is not a number n which added to its sum of digits gives 102399964.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12799992 + ... + 12799999.

Almost surely, 2^102399964 is an apocalyptic number.

It is an amenable number.

102399964 is a deficient number, since it is larger than the sum of its proper divisors (76799980).

102399964 is a wasteful number, since it uses less digits than its factorization.

102399964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25599995 (or 25599993 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 102399964 is about 10119.2867337575. The cubic root of 102399964 is about 467.8427832887.

It can be divided in two parts, 10239996 and 4, that added together give a square (10240000 = 3200²).

The spelling of 102399964 in words is "one hundred two million, three hundred ninety-nine thousand, nine hundred sixty-four".