398708620 has 24 divisors (see below), whose sum is σ = 837676224. Its totient is φ = 159409536.

The previous prime is 398708581. The next prime is 398708621. The reversal of 398708620 is 26807893.

It is not an unprimeable number, because it can be changed into a prime (398708621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65757 + ... + 71563.

It is an arithmetic number, because the mean of its divisors is an integer number (34903176).

Almost surely, 2^398708620 is an apocalyptic number.

It is an amenable number.

398708620 is an abundant number, since it is smaller than the sum of its proper divisors (438967604).

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

398708620 is a wasteful number, since it uses less digits than its factorization.

398708620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9249 (or 9247 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 398708620 is about 19967.6894006292. The cubic root of 398708620 is about 736.0125308004.

The spelling of 398708620 in words is "three hundred ninety-eight million, seven hundred eight thousand, six hundred twenty".