397354818 has 24 divisors (see below), whose sum is σ = 924458832. Its totient is φ = 113529864.

The previous prime is 397354817. The next prime is 397354819. The reversal of 397354818 is 818453793.

It is an interprime number because it is at equal distance from previous prime (397354817) and next prime (397354819).

It is not an unprimeable number, because it can be changed into a prime (397354817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 675480 + ... + 676067.

It is an arithmetic number, because the mean of its divisors is an integer number (38519118).

Almost surely, 2^397354818 is an apocalyptic number.

397354818 is an abundant number, since it is smaller than the sum of its proper divisors (527104014).

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

397354818 is a wasteful number, since it uses less digits than its factorization.

397354818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351566 (or 1351559 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 397354818 is about 19933.7607590740. The cubic root of 397354818 is about 735.1785507262.

The spelling of 397354818 in words is "three hundred ninety-seven million, three hundred fifty-four thousand, eight hundred eighteen".