397422480 has 320 divisors, whose sum is σ = 1567899648. Its totient is φ = 81008640.

The previous prime is 397422479. The next prime is 397422491. The reversal of 397422480 is 84224793.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 676747 + ... + 677333.

Almost surely, 2^397422480 is an apocalyptic number.

397422480 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 397422480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783949824).

397422480 is an abundant number, since it is smaller than the sum of its proper divisors (1170477168).

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

397422480 is a wasteful number, since it uses less digits than its factorization.

397422480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 397422480 is about 19935.4578577970. The cubic root of 397422480 is about 735.2202773524.

The spelling of 397422480 in words is "three hundred ninety-seven million, four hundred twenty-two thousand, four hundred eighty".