90901017 has 6 divisors (see below), whose sum is σ = 131301482. Its totient is φ = 60600672.

The previous prime is 90901003. The next prime is 90901039. The reversal of 90901017 is 71010909.

It can be written as a sum of positive squares in only one way, i.e., 73462041 + 17438976 = 8571^2 + 4176^2 .

It is not a de Polignac number, because 90901017 - 2⁴ = 90901001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90911017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5050048 + ... + 5050065.

Almost surely, 2^90901017 is an apocalyptic number.

It is an amenable number.

90901017 is a deficient number, since it is larger than the sum of its proper divisors (40400465).

90901017 is a wasteful number, since it uses less digits than its factorization.

90901017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10100119 (or 10100116 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 27.

The square root of 90901017 is about 9534.2024836900. The cubic root of 90901017 is about 449.6310012084.

The spelling of 90901017 in words is "ninety million, nine hundred one thousand, seventeen".