398956552 has 8 divisors (see below), whose sum is σ = 748043550. Its totient is φ = 199478272.

The previous prime is 398956543. The next prime is 398956553. The reversal of 398956552 is 255659893.

It can be written as a sum of positive squares in only one way, i.e., 245047716 + 153908836 = 15654^2 + 12406^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 398956552.

It is not an unprimeable number, because it can be changed into a prime (398956553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24934777 + ... + 24934792.

Almost surely, 2^398956552 is an apocalyptic number.

It is an amenable number.

398956552 is a deficient number, since it is larger than the sum of its proper divisors (349086998).

398956552 is a wasteful number, since it uses less digits than its factorization.

398956552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49869575 (or 49869571 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 52.

The square root of 398956552 is about 19973.8967655288. The cubic root of 398956552 is about 736.1650592703.

The spelling of 398956552 in words is "three hundred ninety-eight million, nine hundred fifty-six thousand, five hundred fifty-two".