87387499 has 2 divisors, whose sum is σ = 87387500. Its totient is φ = 87387498.

The previous prime is 87387413. The next prime is 87387539. The reversal of 87387499 is 99478378.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87387499 - 2¹³ = 87379307 is a prime.

It is not a weakly prime, because it can be changed into another prime (87387199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43693749 + 43693750.

It is an arithmetic number, because the mean of its divisors is an integer number (43693750).

Almost surely, 2^87387499 is an apocalyptic number.

87387499 is a deficient number, since it is larger than the sum of its proper divisors (1).

87387499 is an equidigital number, since it uses as much as digits as its factorization.

87387499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 55.

The square root of 87387499 is about 9348.1281013901. The cubic root of 87387499 is about 443.7616524349.

The spelling of 87387499 in words is "eighty-seven million, three hundred eighty-seven thousand, four hundred ninety-nine".