397343793 has 72 divisors (see below), whose sum is σ = 687748320. Its totient is φ = 203280000.

The previous prime is 397343783. The next prime is 397343831.

397343793 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 397343793 - 2¹⁰ = 397342769 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (397343743) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1582918 + ... + 1583168.

It is an arithmetic number, because the mean of its divisors is an integer number (9552060).

Almost surely, 2^397343793 is an apocalyptic number.

397343793 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

397343793 is a deficient number, since it is larger than the sum of its proper divisors (290404527).

397343793 is a wasteful number, since it uses less digits than its factorization.

397343793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 361 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 48.

The square root of 397343793 is about 19933.4842162628. The cubic root of 397343793 is about 735.1717512461.

The spelling of 397343793 in words is "three hundred ninety-seven million, three hundred forty-three thousand, seven hundred ninety-three".