102490439 has 4 divisors (see below), whose sum is σ = 102552120. Its totient is φ = 102428760.

The previous prime is 102490429. The next prime is 102490441. The reversal of 102490439 is 934094201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102490439 - 2⁸ = 102490183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102490429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28277 + ... + 31694.

It is an arithmetic number, because the mean of its divisors is an integer number (25638030).

Almost surely, 2^102490439 is an apocalyptic number.

102490439 is a deficient number, since it is larger than the sum of its proper divisors (61681).

102490439 is an equidigital number, since it uses as much as digits as its factorization.

102490439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61680.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 102490439 is about 10123.7561705130. The cubic root of 102490439 is about 467.9805294819.

The spelling of 102490439 in words is "one hundred two million, four hundred ninety thousand, four hundred thirty-nine".