90922787 has 2 divisors, whose sum is σ = 90922788. Its totient is φ = 90922786.

The previous prime is 90922781. The next prime is 90922823. The reversal of 90922787 is 78722909.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90922787 - 2⁶ = 90922723 is a prime.

It is not a weakly prime, because it can be changed into another prime (90922781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45461393 + 45461394.

It is an arithmetic number, because the mean of its divisors is an integer number (45461394).

Almost surely, 2^90922787 is an apocalyptic number.

90922787 is a deficient number, since it is larger than the sum of its proper divisors (1).

90922787 is an equidigital number, since it uses as much as digits as its factorization.

90922787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 90922787 is about 9535.3440944729. The cubic root of 90922787 is about 449.6668925765. Note that the first 3 decimals are identical.

The spelling of 90922787 in words is "ninety million, nine hundred twenty-two thousand, seven hundred eighty-seven".