398459031 has 8 divisors (see below), whose sum is σ = 545637744. Its totient is φ = 258459840.

The previous prime is 398459021. The next prime is 398459053. The reversal of 398459031 is 130954893.

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

It is not a de Polignac number, because 398459031 - 2⁵ = 398458999 is a prime.

It is a super-2 number, since 2×398459031² = 317539198770917922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398459021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1794750 + ... + 1794971.

It is an arithmetic number, because the mean of its divisors is an integer number (68204718).

Almost surely, 2^398459031 is an apocalyptic number.

398459031 is a deficient number, since it is larger than the sum of its proper divisors (147178713).

398459031 is a wasteful number, since it uses less digits than its factorization.

398459031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3589761.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 398459031 is about 19961.4386004616. The cubic root of 398459031 is about 735.8589190586.

The spelling of 398459031 in words is "three hundred ninety-eight million, four hundred fifty-nine thousand, thirty-one".