398920370 has 8 divisors (see below), whose sum is σ = 718056684. Its totient is φ = 159568144.

The previous prime is 398920363. The next prime is 398920373. The reversal of 398920370 is 73029893.

It can be written as a sum of positive squares in 2 ways, for example, as 398042401 + 877969 = 19951^2 + 937^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (398920373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19946009 + ... + 19946028.

Almost surely, 2^398920370 is an apocalyptic number.

398920370 is a deficient number, since it is larger than the sum of its proper divisors (319136314).

398920370 is a wasteful number, since it uses less digits than its factorization.

398920370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39892044.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 398920370 is about 19972.9910128653. The cubic root of 398920370 is about 736.1428039401.

The spelling of 398920370 in words is "three hundred ninety-eight million, nine hundred twenty thousand, three hundred seventy".