163739039 has 4 divisors (see below), whose sum is σ = 163835256. Its totient is φ = 163642824.

The previous prime is 163739029. The next prime is 163739041. The reversal of 163739039 is 930937361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 930937361 = 223 ⋅4174607.

It is a cyclic number.

It is not a de Polignac number, because 163739039 - 2²⁴ = 146961823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163738987 and 163739005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163739029) 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, 45509 + ... + 48974.

It is an arithmetic number, because the mean of its divisors is an integer number (40958814).

Almost surely, 2^163739039 is an apocalyptic number.

163739039 is a deficient number, since it is larger than the sum of its proper divisors (96217).

163739039 is an equidigital number, since it uses as much as digits as its factorization.

163739039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96216.

The product of its (nonzero) digits is 91854, while the sum is 41.

The square root of 163739039 is about 12796.0556031927. The cubic root of 163739039 is about 547.0798834345.

The spelling of 163739039 in words is "one hundred sixty-three million, seven hundred thirty-nine thousand, thirty-nine".