398897100 has 108 divisors (see below), whose sum is σ = 1428960624. Its totient is φ = 91175040.

The previous prime is 398897089. The next prime is 398897113. The reversal of 398897100 is 1798893.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25359 + ... + 37958.

Almost surely, 2^398897100 is an apocalyptic number.

398897100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

398897100 is an abundant number, since it is smaller than the sum of its proper divisors (1030063524).

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

398897100 is a wasteful number, since it uses less digits than its factorization.

398897100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63344 (or 63334 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 398897100 is about 19972.4084676836. The cubic root of 398897100 is about 736.1284899922.

The spelling of 398897100 in words is "three hundred ninety-eight million, eight hundred ninety-seven thousand, one hundred".