397261368 has 64 divisors (see below), whose sum is σ = 1261152000. Its totient is φ = 113502816.

The previous prime is 397261363. The next prime is 397261369. The reversal of 397261368 is 863162793.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397261363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129858 + ... + 132881.

It is an arithmetic number, because the mean of its divisors is an integer number (19705500).

Almost surely, 2^397261368 is an apocalyptic number.

It is an amenable number.

397261368 is an abundant number, since it is smaller than the sum of its proper divisors (863890632).

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

397261368 is a wasteful number, since it uses less digits than its factorization.

397261368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262761 (or 262751 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 397261368 is about 19931.4166079584. The cubic root of 397261368 is about 735.1209130524.

The spelling of 397261368 in words is "three hundred ninety-seven million, two hundred sixty-one thousand, three hundred sixty-eight".