90877487 has 2 divisors, whose sum is σ = 90877488. Its totient is φ = 90877486.

The previous prime is 90877471. The next prime is 90877499. The reversal of 90877487 is 78477809.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90877487 - 2⁴ = 90877471 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 (90877187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45438743 + 45438744.

It is an arithmetic number, because the mean of its divisors is an integer number (45438744).

Almost surely, 2^90877487 is an apocalyptic number.

90877487 is a deficient number, since it is larger than the sum of its proper divisors (1).

90877487 is an equidigital number, since it uses as much as digits as its factorization.

90877487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 50.

The square root of 90877487 is about 9532.9684254171. The cubic root of 90877487 is about 449.5922017508.

The spelling of 90877487 in words is "ninety million, eight hundred seventy-seven thousand, four hundred eighty-seven".