398374380 has 36 divisors (see below), whose sum is σ = 1208402832. Its totient is φ = 106233120.

The previous prime is 398374373. The next prime is 398374423. The reversal of 398374380 is 83473893.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 1106416 + ... + 1106775.

Almost surely, 2^398374380 is an apocalyptic number.

398374380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

398374380 is an abundant number, since it is smaller than the sum of its proper divisors (810028452).

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

398374380 is a wasteful number, since it uses less digits than its factorization.

398374380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213206 (or 2213201 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 398374380 is about 19959.3181246254. The cubic root of 398374380 is about 735.8068052902.

The spelling of 398374380 in words is "three hundred ninety-eight million, three hundred seventy-four thousand, three hundred eighty".