915880487 has 2 divisors, whose sum is σ = 915880488. Its totient is φ = 915880486.

The previous prime is 915880477. The next prime is 915880549. The reversal of 915880487 is 784088519.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-915880487 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 (915880477) 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, 457940243 + 457940244.

It is an arithmetic number, because the mean of its divisors is an integer number (457940244).

Almost surely, 2^915880487 is an apocalyptic number.

915880487 is a deficient number, since it is larger than the sum of its proper divisors (1).

915880487 is an equidigital number, since it uses as much as digits as its factorization.

915880487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 915880487 is about 30263.5174261023. The cubic root of 915880487 is about 971.1349902107.

The spelling of 915880487 in words is "nine hundred fifteen million, eight hundred eighty thousand, four hundred eighty-seven".