397747260 has 144 divisors (see below), whose sum is σ = 1260220416. Its totient is φ = 105302592.

The previous prime is 397747243. The next prime is 397747271. The reversal of 397747260 is 62747793.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1083597 + ... + 1083963.

Almost surely, 2^397747260 is an apocalyptic number.

397747260 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397747260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630110208).

397747260 is an abundant number, since it is smaller than the sum of its proper divisors (862473156).

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

397747260 is a wasteful number, since it uses less digits than its factorization.

397747260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The square root of 397747260 is about 19943.6019815880. The cubic root of 397747260 is about 735.4205007393.

The spelling of 397747260 in words is "three hundred ninety-seven million, seven hundred forty-seven thousand, two hundred sixty".