90739 has 8 divisors (see below), whose sum is σ = 101232. Its totient is φ = 80640.

The previous prime is 90731. The next prime is 90749. The reversal of 90739 is 93709.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90739 - 2³ = 90731 is a prime.

It is a super-2 number, since 2×90739² = 16467132242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90731) 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, 747 + ... + 859.

It is an arithmetic number, because the mean of its divisors is an integer number (12654).

2⁹⁰⁷³⁹ is an apocalyptic number.

90739 is a deficient number, since it is larger than the sum of its proper divisors (10493).

90739 is a wasteful number, since it uses less digits than its factorization.

90739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197.

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 90739 is about 301.2291486560. The cubic root of 90739 is about 44.9363709777.

It can be divided in two parts, 907 and 39, that added together give a triangular number (946 = T₄₃).

The spelling of 90739 in words is "ninety thousand, seven hundred thirty-nine".