398849280 has 72 divisors (see below), whose sum is σ = 1273837152. Its totient is φ = 106358784.

The previous prime is 398849261. The next prime is 398849299. The reversal of 398849280 is 82948893.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (398849261) and next prime (398849299).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48094 + ... + 55773.

Almost surely, 2^398849280 is an apocalyptic number.

398849280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

398849280 is an abundant number, since it is smaller than the sum of its proper divisors (874987872).

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

398849280 is a wasteful number, since it uses less digits than its factorization.

398849280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103891 (or 103877 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 398849280 is about 19971.2112802404. The cubic root of 398849280 is about 736.0990729896.

The spelling of 398849280 in words is "three hundred ninety-eight million, eight hundred forty-nine thousand, two hundred eighty".