90984923 has 2 divisors, whose sum is σ = 90984924. Its totient is φ = 90984922.

The previous prime is 90984827. The next prime is 90984931. The reversal of 90984923 is 32948909.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90984923 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (90984823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45492461 + 45492462.

It is an arithmetic number, because the mean of its divisors is an integer number (45492462).

Almost surely, 2^90984923 is an apocalyptic number.

90984923 is a deficient number, since it is larger than the sum of its proper divisors (1).

90984923 is an equidigital number, since it uses as much as digits as its factorization.

90984923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 90984923 is about 9538.6017319102. The cubic root of 90984923 is about 449.7693023265.

The spelling of 90984923 in words is "ninety million, nine hundred eighty-four thousand, nine hundred twenty-three".