398845629 has 24 divisors (see below), whose sum is σ = 709060352. Its totient is φ = 210379680.

The previous prime is 398845621. The next prime is 398845631. The reversal of 398845629 is 926548893.

398845629 is a `hidden beast` number, since 3 + 9 + 8 + 8 + 4 + 5 + 629 = 666.

It is not a de Polignac number, because 398845629 - 2³ = 398845621 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398845621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242677 + ... + 244314.

Almost surely, 2^398845629 is an apocalyptic number.

398845629 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

398845629 is a deficient number, since it is larger than the sum of its proper divisors (310214723).

398845629 is a wasteful number, since it uses less digits than its factorization.

398845629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487017 (or 487014 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 398845629 is about 19971.1198734573. The cubic root of 398845629 is about 736.0968269399.

The spelling of 398845629 in words is "three hundred ninety-eight million, eight hundred forty-five thousand, six hundred twenty-nine".