398259156 has 24 divisors (see below), whose sum is σ = 929617920. Its totient is φ = 132703552.

The previous prime is 398259109. The next prime is 398259193. The reversal of 398259156 is 651952893.

It is a happy number.

It is a super-2 number, since 2×398259156² = 317220710675664672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42925 + ... + 51371.

It is an arithmetic number, because the mean of its divisors is an integer number (38734080).

Almost surely, 2^398259156 is an apocalyptic number.

It is an amenable number.

398259156 is an abundant number, since it is smaller than the sum of its proper divisors (531358764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398259156 is a wasteful number, since it uses less digits than its factorization.

398259156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12383 (or 12381 counting only the distinct ones).

The product of its digits is 583200, while the sum is 48.

The square root of 398259156 is about 19956.4314445243. The cubic root of 398259156 is about 735.7358579745.

The spelling of 398259156 in words is "three hundred ninety-eight million, two hundred fifty-nine thousand, one hundred fifty-six".