84921923 has 2 divisors, whose sum is σ = 84921924. Its totient is φ = 84921922.

The previous prime is 84921913. The next prime is 84921959. The reversal of 84921923 is 32912948.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84921923 - 2¹² = 84917827 is a prime.

It is not a weakly prime, because it can be changed into another prime (84921913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42460961 + 42460962.

It is an arithmetic number, because the mean of its divisors is an integer number (42460962).

Almost surely, 2^84921923 is an apocalyptic number.

84921923 is a deficient number, since it is larger than the sum of its proper divisors (1).

84921923 is an equidigital number, since it uses as much as digits as its factorization.

84921923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 84921923 is about 9215.3091646455. The cubic root of 84921923 is about 439.5483019474.

The spelling of 84921923 in words is "eighty-four million, nine hundred twenty-one thousand, nine hundred twenty-three".