397205167 has 2 divisors, whose sum is σ = 397205168. Its totient is φ = 397205166.

The previous prime is 397205113. The next prime is 397205173. The reversal of 397205167 is 761502793.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397205167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397205467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198602583 + 198602584.

It is an arithmetic number, because the mean of its divisors is an integer number (198602584).

Almost surely, 2^397205167 is an apocalyptic number.

397205167 is a deficient number, since it is larger than the sum of its proper divisors (1).

397205167 is an equidigital number, since it uses as much as digits as its factorization.

397205167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 397205167 is about 19930.0066984434. The cubic root of 397205167 is about 735.0862452978.

The spelling of 397205167 in words is "three hundred ninety-seven million, two hundred five thousand, one hundred sixty-seven".