398030886 has 96 divisors (see below), whose sum is σ = 1022561280. Its totient is φ = 110548800.

The previous prime is 398030869. The next prime is 398030891. The reversal of 398030886 is 688030893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 114916 + ... + 118328.

It is an arithmetic number, because the mean of its divisors is an integer number (10651680).

Almost surely, 2^398030886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398030886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511280640).

398030886 is an abundant number, since it is smaller than the sum of its proper divisors (624530394).

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

398030886 is a wasteful number, since it uses less digits than its factorization.

398030886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3482 (or 3479 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 398030886 is about 19950.7114158869. The cubic root of 398030886 is about 735.5952639925.

The spelling of 398030886 in words is "three hundred ninety-eight million, thirty thousand, eight hundred eighty-six".