102798399 has 8 divisors (see below), whose sum is σ = 149524992. Its totient is φ = 62302040.

The previous prime is 102798391. The next prime is 102798413. The reversal of 102798399 is 993897201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102798399 - 2³ = 102798391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102798391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1557519 + ... + 1557584.

It is an arithmetic number, because the mean of its divisors is an integer number (18690624).

Almost surely, 2^102798399 is an apocalyptic number.

102798399 is a deficient number, since it is larger than the sum of its proper divisors (46726593).

102798399 is a wasteful number, since it uses less digits than its factorization.

102798399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115117.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 102798399 is about 10138.9545319032. The cubic root of 102798399 is about 468.4487851144.

The spelling of 102798399 in words is "one hundred two million, seven hundred ninety-eight thousand, three hundred ninety-nine".