160939999 has 4 divisors (see below), whose sum is σ = 175570920. Its totient is φ = 146309080.

The previous prime is 160939991. The next prime is 160940027. The reversal of 160939999 is 999939061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999939061 = 11 ⋅90903551.

It is a cyclic number.

It is not a de Polignac number, because 160939999 - 2³ = 160939991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160939991) 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, 7315444 + ... + 7315465.

It is an arithmetic number, because the mean of its divisors is an integer number (43892730).

Almost surely, 2^160939999 is an apocalyptic number.

160939999 is a deficient number, since it is larger than the sum of its proper divisors (14630921).

160939999 is a wasteful number, since it uses less digits than its factorization.

160939999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14630920.

The product of its (nonzero) digits is 1062882, while the sum is 55.

The square root of 160939999 is about 12686.2129494976. The cubic root of 160939999 is about 543.9445938651.

The spelling of 160939999 in words is "one hundred sixty million, nine hundred thirty-nine thousand, nine hundred ninety-nine".