87913387 has 2 divisors, whose sum is σ = 87913388. Its totient is φ = 87913386.

The previous prime is 87913381. The next prime is 87913403. The reversal of 87913387 is 78331978.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87913387 - 2¹⁵ = 87880619 is a prime.

It is a super-2 number, since 2×87913387² = 15457527227623538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87913381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43956693 + 43956694.

It is an arithmetic number, because the mean of its divisors is an integer number (43956694).

Almost surely, 2^87913387 is an apocalyptic number.

87913387 is a deficient number, since it is larger than the sum of its proper divisors (1).

87913387 is an equidigital number, since it uses as much as digits as its factorization.

87913387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 46.

The square root of 87913387 is about 9376.2138947445. The cubic root of 87913387 is about 444.6500417361.

The spelling of 87913387 in words is "eighty-seven million, nine hundred thirteen thousand, three hundred eighty-seven".