399108166 has 16 divisors (see below), whose sum is σ = 606629088. Its totient is φ = 196912000.

The previous prime is 399108107. The next prime is 399108169. The reversal of 399108166 is 661801993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399108169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59646 + ... + 65998.

It is an arithmetic number, because the mean of its divisors is an integer number (37914318).

Almost surely, 2^399108166 is an apocalyptic number.

399108166 is a deficient number, since it is larger than the sum of its proper divisors (207520922).

399108166 is a wasteful number, since it uses less digits than its factorization.

399108166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6767.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 399108166 is about 19977.6917085033. The cubic root of 399108166 is about 736.2583014986.

The spelling of 399108166 in words is "three hundred ninety-nine million, one hundred eight thousand, one hundred sixty-six".