397667337 has 4 divisors (see below), whose sum is σ = 530223120. Its totient is φ = 265111556.

The previous prime is 397667299. The next prime is 397667363. The reversal of 397667337 is 733766793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 733766793 = 3 ⋅244588931.

It is a cyclic number.

It is not a de Polignac number, because 397667337 - 2¹⁵ = 397634569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397667337.

It is not an unprimeable number, because it can be changed into a prime (397667377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66277887 + ... + 66277892.

It is an arithmetic number, because the mean of its divisors is an integer number (132555780).

Almost surely, 2^397667337 is an apocalyptic number.

It is an amenable number.

397667337 is a deficient number, since it is larger than the sum of its proper divisors (132555783).

397667337 is a wasteful number, since it uses less digits than its factorization.

397667337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132555782.

The product of its digits is 3000564, while the sum is 51.

The square root of 397667337 is about 19941.5981556143. The cubic root of 397667337 is about 735.3712391806.

The spelling of 397667337 in words is "three hundred ninety-seven million, six hundred sixty-seven thousand, three hundred thirty-seven".