87807899 has 2 divisors, whose sum is σ = 87807900. Its totient is φ = 87807898.

The previous prime is 87807887. The next prime is 87807943. The reversal of 87807899 is 99870878.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87807899 - 2¹² = 87803803 is a prime.

It is not a weakly prime, because it can be changed into another prime (87807869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43903949 + 43903950.

It is an arithmetic number, because the mean of its divisors is an integer number (43903950).

Almost surely, 2^87807899 is an apocalyptic number.

87807899 is a deficient number, since it is larger than the sum of its proper divisors (1).

87807899 is an equidigital number, since it uses as much as digits as its factorization.

87807899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 56.

The square root of 87807899 is about 9370.5869079797. The cubic root of 87807899 is about 444.4721241349.

The spelling of 87807899 in words is "eighty-seven million, eight hundred seven thousand, eight hundred ninety-nine".