167944397 has 2 divisors, whose sum is σ = 167944398. Its totient is φ = 167944396.

The previous prime is 167944393. The next prime is 167944429. The reversal of 167944397 is 793449761.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129367876 + 38576521 = 11374^2 + 6211^2 .

It is a cyclic number.

It is not a de Polignac number, because 167944397 - 2² = 167944393 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167944393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83972198 + 83972199.

It is an arithmetic number, because the mean of its divisors is an integer number (83972199).

Almost surely, 2^167944397 is an apocalyptic number.

It is an amenable number.

167944397 is a deficient number, since it is larger than the sum of its proper divisors (1).

167944397 is an equidigital number, since it uses as much as digits as its factorization.

167944397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 50.

The square root of 167944397 is about 12959.3362870172. The cubic root of 167944397 is about 551.7239537730.

The spelling of 167944397 in words is "one hundred sixty-seven million, nine hundred forty-four thousand, three hundred ninety-seven".