397350140 has 24 divisors (see below), whose sum is σ = 910293552. Its totient is φ = 144490880.

The previous prime is 397350127. The next prime is 397350181. The reversal of 397350140 is 41053793.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 397350097 and 397350106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 902849 + ... + 903288.

It is an arithmetic number, because the mean of its divisors is an integer number (37928898).

Almost surely, 2^397350140 is an apocalyptic number.

It is an amenable number.

397350140 is an abundant number, since it is smaller than the sum of its proper divisors (512943412).

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

397350140 is a wasteful number, since it uses less digits than its factorization.

397350140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806157 (or 1806155 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 397350140 is about 19933.6434201076. The cubic root of 397350140 is about 735.1756656651.

The spelling of 397350140 in words is "three hundred ninety-seven million, three hundred fifty thousand, one hundred forty".