398159402 has 16 divisors (see below), whose sum is σ = 629143200. Its totient is φ = 188460720.

The previous prime is 398159393. The next prime is 398159407. The reversal of 398159402 is 204951893.

It is a self number, because there is not a number n which added to its sum of digits gives 398159402.

It is not an unprimeable number, because it can be changed into a prime (398159407) 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, 61877 + ... + 68007.

It is an arithmetic number, because the mean of its divisors is an integer number (39321450).

Almost surely, 2^398159402 is an apocalyptic number.

398159402 is a deficient number, since it is larger than the sum of its proper divisors (230983798).

398159402 is a wasteful number, since it uses less digits than its factorization.

398159402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7861.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 398159402 is about 19953.9319934694. The cubic root of 398159402 is about 735.6744250087.

The spelling of 398159402 in words is "three hundred ninety-eight million, one hundred fifty-nine thousand, four hundred two".