398246590 has 32 divisors (see below), whose sum is σ = 867443904. Its totient is φ = 128509440.

The previous prime is 398246579. The next prime is 398246603. The reversal of 398246590 is 95642893.

It is a self number, because there is not a number n which added to its sum of digits gives 398246590.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166141 + ... + 168520.

It is an arithmetic number, because the mean of its divisors is an integer number (27107622).

Almost surely, 2^398246590 is an apocalyptic number.

398246590 is an abundant number, since it is smaller than the sum of its proper divisors (469197314).

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

398246590 is a wasteful number, since it uses less digits than its factorization.

398246590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334692.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 398246590 is about 19956.1166061937. The cubic root of 398246590 is about 735.7281198356.

The spelling of 398246590 in words is "three hundred ninety-eight million, two hundred forty-six thousand, five hundred ninety".