398806746 has 32 divisors (see below), whose sum is σ = 863318400. Its totient is φ = 122088384.

The previous prime is 398806711. The next prime is 398806769. The reversal of 398806746 is 647608893.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2676 + ... + 28368.

It is an arithmetic number, because the mean of its divisors is an integer number (26978700).

Almost surely, 2^398806746 is an apocalyptic number.

398806746 is an abundant number, since it is smaller than the sum of its proper divisors (464511654).

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

398806746 is a wasteful number, since it uses less digits than its factorization.

398806746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25910.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 398806746 is about 19970.1463690179. The cubic root of 398806746 is about 736.0729057525.

The spelling of 398806746 in words is "three hundred ninety-eight million, eight hundred six thousand, seven hundred forty-six".