161679039 has 4 divisors (see below), whose sum is σ = 215572056. Its totient is φ = 107786024.

The previous prime is 161678989. The next prime is 161679059. The reversal of 161679039 is 930976161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161679039 - 2⁷ = 161678911 is a prime.

It is a super-2 number, since 2×161679039² = 52280223303927042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161679059) 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, 26946504 + ... + 26946509.

It is an arithmetic number, because the mean of its divisors is an integer number (53893014).

Almost surely, 2^161679039 is an apocalyptic number.

161679039 is a deficient number, since it is larger than the sum of its proper divisors (53893017).

161679039 is an equidigital number, since it uses as much as digits as its factorization.

161679039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53893016.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 161679039 is about 12715.3072711594. The cubic root of 161679039 is about 544.7759244936.

The spelling of 161679039 in words is "one hundred sixty-one million, six hundred seventy-nine thousand, thirty-nine".