87938923 has 2 divisors, whose sum is σ = 87938924. Its totient is φ = 87938922.

The previous prime is 87938887. The next prime is 87938953. The reversal of 87938923 is 32983978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87938923 - 2²¹ = 85841771 is a prime.

It is not a weakly prime, because it can be changed into another prime (87938953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43969461 + 43969462.

It is an arithmetic number, because the mean of its divisors is an integer number (43969462).

Almost surely, 2^87938923 is an apocalyptic number.

87938923 is a deficient number, since it is larger than the sum of its proper divisors (1).

87938923 is an equidigital number, since it uses as much as digits as its factorization.

87938923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 87938923 is about 9377.5755395518. The cubic root of 87938923 is about 444.6930897278.

The spelling of 87938923 in words is "eighty-seven million, nine hundred thirty-eight thousand, nine hundred twenty-three".