90901039 has 2 divisors, whose sum is σ = 90901040. Its totient is φ = 90901038.

The previous prime is 90901003. The next prime is 90901043. The reversal of 90901039 is 93010909.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90901039 - 2¹³ = 90892847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90901039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90901079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45450519 + 45450520.

It is an arithmetic number, because the mean of its divisors is an integer number (45450520).

Almost surely, 2^90901039 is an apocalyptic number.

90901039 is a deficient number, since it is larger than the sum of its proper divisors (1).

90901039 is an equidigital number, since it uses as much as digits as its factorization.

90901039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 90901039 is about 9534.2036374309. The cubic root of 90901039 is about 449.6310374818.

The spelling of 90901039 in words is "ninety million, nine hundred one thousand, thirty-nine".