399161107 has 2 divisors, whose sum is σ = 399161108. Its totient is φ = 399161106.

The previous prime is 399161089. The next prime is 399161129. The reversal of 399161107 is 701161993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 399161107 - 2¹⁵ = 399128339 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (399161197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199580553 + 199580554.

It is an arithmetic number, because the mean of its divisors is an integer number (199580554).

Almost surely, 2^399161107 is an apocalyptic number.

399161107 is a deficient number, since it is larger than the sum of its proper divisors (1).

399161107 is an equidigital number, since it uses as much as digits as its factorization.

399161107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 399161107 is about 19979.0166674939. The cubic root of 399161107 is about 736.2908545178.

The spelling of 399161107 in words is "three hundred ninety-nine million, one hundred sixty-one thousand, one hundred seven".