102290399 has 4 divisors (see below), whose sum is σ = 102313536. Its totient is φ = 102267264.

The previous prime is 102290393. The next prime is 102290413. The reversal of 102290399 is 993092201.

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 102290399 - 2⁸ = 102290143 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 (102290393) 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, 2639 + ... + 14544.

It is an arithmetic number, because the mean of its divisors is an integer number (25578384).

Almost surely, 2^102290399 is an apocalyptic number.

102290399 is a deficient number, since it is larger than the sum of its proper divisors (23137).

102290399 is an equidigital number, since it uses as much as digits as its factorization.

102290399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23136.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 102290399 is about 10113.8716127900. The cubic root of 102290399 is about 467.6758643258.

The spelling of 102290399 in words is "one hundred two million, two hundred ninety thousand, three hundred ninety-nine".