87760399 has 2 divisors, whose sum is σ = 87760400. Its totient is φ = 87760398.

The previous prime is 87760339. The next prime is 87760403. The reversal of 87760399 is 99306778.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87760399 - 2⁷ = 87760271 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87760339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43880199 + 43880200.

It is an arithmetic number, because the mean of its divisors is an integer number (43880200).

Almost surely, 2^87760399 is an apocalyptic number.

87760399 is a deficient number, since it is larger than the sum of its proper divisors (1).

87760399 is an equidigital number, since it uses as much as digits as its factorization.

87760399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 87760399 is about 9368.0520387111. The cubic root of 87760399 is about 444.3919634120.

The spelling of 87760399 in words is "eighty-seven million, seven hundred sixty thousand, three hundred ninety-nine".