87937999 has 2 divisors, whose sum is σ = 87938000. Its totient is φ = 87937998.

The previous prime is 87937961. The next prime is 87938017. The reversal of 87937999 is 99973978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87937999 - 2¹⁵ = 87905231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87937699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43968999 + 43969000.

It is an arithmetic number, because the mean of its divisors is an integer number (43969000).

Almost surely, 2^87937999 is an apocalyptic number.

87937999 is a deficient number, since it is larger than the sum of its proper divisors (1).

87937999 is an equidigital number, since it uses as much as digits as its factorization.

87937999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7715736, while the sum is 61.

The square root of 87937999 is about 9377.5262729571. The cubic root of 87937999 is about 444.6915322155.

The spelling of 87937999 in words is "eighty-seven million, nine hundred thirty-seven thousand, nine hundred ninety-nine".