890173923 has 8 divisors (see below), whose sum is σ = 1187679936. Its totient is φ = 593058600.

The previous prime is 890173891. The next prime is 890173939. The reversal of 890173923 is 329371098.

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

It is not a de Polignac number, because 890173923 - 2⁵ = 890173891 is a prime.

It is a super-2 number, since 2×890173923² = 1584819226378419858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (890171923) 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, 92313 + ... + 101498.

It is an arithmetic number, because the mean of its divisors is an integer number (148459992).

Almost surely, 2^890173923 is an apocalyptic number.

890173923 is a deficient number, since it is larger than the sum of its proper divisors (297506013).

890173923 is a wasteful number, since it uses less digits than its factorization.

890173923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195345.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 890173923 is about 29835.7825940598. The cubic root of 890173923 is about 961.9628254156.

The spelling of 890173923 in words is "eight hundred ninety million, one hundred seventy-three thousand, nine hundred twenty-three".