89990000923 has 2 divisors, whose sum is σ = 89990000924. Its totient is φ = 89990000922.

The previous prime is 89990000873. The next prime is 89990000959. The reversal of 89990000923 is 32900009998.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89990000923 - 2¹³ = 89989992731 is a prime.

It is a super-2 number, since 2×89990000923² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89990000983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44995000461 + 44995000462.

It is an arithmetic number, because the mean of its divisors is an integer number (44995000462).

Almost surely, 2^89990000923 is an apocalyptic number.

89990000923 is a deficient number, since it is larger than the sum of its proper divisors (1).

89990000923 is an equidigital number, since it uses as much as digits as its factorization.

89990000923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 49.

The spelling of 89990000923 in words is "eighty-nine billion, nine hundred ninety million, nine hundred twenty-three", and thus it is an aban number.