90791017 has 4 divisors (see below), whose sum is σ = 92902480. Its totient is φ = 88679556.

The previous prime is 90790993. The next prime is 90791039. The reversal of 90791017 is 71019709.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71019709 = 113 ⋅628493.

It is a cyclic number.

It is not a de Polignac number, because 90791017 - 2¹⁵ = 90758249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90791117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055667 + ... + 1055752.

It is an arithmetic number, because the mean of its divisors is an integer number (23225620).

Almost surely, 2^90791017 is an apocalyptic number.

It is an amenable number.

90791017 is a deficient number, since it is larger than the sum of its proper divisors (2111463).

90791017 is a wasteful number, since it uses less digits than its factorization.

90791017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111462.

The product of its (nonzero) digits is 3969, while the sum is 34.

The square root of 90791017 is about 9528.4320326064. The cubic root of 90791017 is about 449.4495607229.

The spelling of 90791017 in words is "ninety million, seven hundred ninety-one thousand, seventeen".