890929717123 has 4 divisors (see below), whose sum is σ = 943337347560. Its totient is φ = 838522086688.

The previous prime is 890929717087. The next prime is 890929717147. The reversal of 890929717123 is 321717929098.

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 890929717123 - 2¹⁷ = 890929586051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (890929717823) 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, 26203815193 + ... + 26203815226.

It is an arithmetic number, because the mean of its divisors is an integer number (235834336890).

Almost surely, 2^890929717123 is an apocalyptic number.

890929717123 is a deficient number, since it is larger than the sum of its proper divisors (52407630437).

890929717123 is a wasteful number, since it uses less digits than its factorization.

890929717123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52407630436.

The product of its (nonzero) digits is 3429216, while the sum is 58.

The spelling of 890929717123 in words is "eight hundred ninety billion, nine hundred twenty-nine million, seven hundred seventeen thousand, one hundred twenty-three".