398522912 has 18 divisors (see below), whose sum is σ = 784814373. Its totient is φ = 199204992.

The previous prime is 398522903. The next prime is 398522921. The reversal of 398522912 is 219225893.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an interprime number because it is at equal distance from previous prime (398522903) and next prime (398522921).

It can be written as a sum of positive squares in 2 ways, for example, as 315275536 + 83247376 = 17756^2 + 9124^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=14116.

It is a super-2 number, since 2×398522912² = 317641022777919488, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 398522912.

It is an unprimeable number.

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 in 2 ways as a sum of consecutive naturals, for example, 111164 + ... + 114692.

Almost surely, 2^398522912 is an apocalyptic number.

398522912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

398522912 is a deficient number, since it is larger than the sum of its proper divisors (386291461).

398522912 is an frugal number, since it uses more digits than its factorization.

398522912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068 (or 3531 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 398522912 is about 19963.0386464586. The cubic root of 398522912 is about 735.8982412876.

The spelling of 398522912 in words is "three hundred ninety-eight million, five hundred twenty-two thousand, nine hundred twelve".