87942923 has 2 divisors, whose sum is σ = 87942924. Its totient is φ = 87942922.

The previous prime is 87942917. The next prime is 87942931. The reversal of 87942923 is 32924978.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87942923 - 2⁶ = 87942859 is a prime.

It is not a weakly prime, because it can be changed into another prime (87942983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43971461 + 43971462.

It is an arithmetic number, because the mean of its divisors is an integer number (43971462).

Almost surely, 2^87942923 is an apocalyptic number.

87942923 is a deficient number, since it is larger than the sum of its proper divisors (1).

87942923 is an equidigital number, since it uses as much as digits as its factorization.

87942923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 87942923 is about 9377.7888118682. The cubic root of 87942923 is about 444.6998320793.

The spelling of 87942923 in words is "eighty-seven million, nine hundred forty-two thousand, nine hundred twenty-three".