398990108140 has 48 divisors (see below), whose sum is σ = 905214508128. Its totient is φ = 146848725504.

The previous prime is 398990108123. The next prime is 398990108159. The reversal of 398990108140 is 41801099893.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2370022 + ... + 2532781.

It is an arithmetic number, because the mean of its divisors is an integer number (18858635586).

Almost surely, 2^398990108140 is an apocalyptic number.

It is an amenable number.

398990108140 is an abundant number, since it is smaller than the sum of its proper divisors (506224399988).

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

398990108140 is a wasteful number, since it uses less digits than its factorization.

398990108140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4903138 (or 4903136 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 52.

The spelling of 398990108140 in words is "three hundred ninety-eight billion, nine hundred ninety million, one hundred eight thousand, one hundred forty".