90739169 has 4 divisors (see below), whose sum is σ = 91832496. Its totient is φ = 89645844.

The previous prime is 90739123. The next prime is 90739223. The reversal of 90739169 is 96193709.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90739169 - 2⁸ = 90738913 is a prime.

It is a super-2 number, since 2×90739169² = 16467193581621122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90739969) 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, 546539 + ... + 546704.

It is an arithmetic number, because the mean of its divisors is an integer number (22958124).

Almost surely, 2^90739169 is an apocalyptic number.

It is an amenable number.

90739169 is a deficient number, since it is larger than the sum of its proper divisors (1093327).

90739169 is a wasteful number, since it uses less digits than its factorization.

90739169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093326.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 90739169 is about 9525.7109445962. The cubic root of 90739169 is about 449.3639887545.

The spelling of 90739169 in words is "ninety million, seven hundred thirty-nine thousand, one hundred sixty-nine".