397983614550 has 48 divisors (see below), whose sum is σ = 1003179704592. Its totient is φ = 104389142400.

The previous prime is 397983614543. The next prime is 397983614563. The reversal of 397983614550 is 55416389793.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21738589 + ... + 21756888.

It is an arithmetic number, because the mean of its divisors is an integer number (20899577179).

Almost surely, 2^397983614550 is an apocalyptic number.

397983614550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

397983614550 is an abundant number, since it is smaller than the sum of its proper divisors (605196090042).

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

397983614550 is a wasteful number, since it uses less digits than its factorization.

397983614550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43495553 (or 43495548 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 60.

The spelling of 397983614550 in words is "three hundred ninety-seven billion, nine hundred eighty-three million, six hundred fourteen thousand, five hundred fifty".