90798917 has 16 divisors (see below), whose sum is σ = 103956480. Its totient is φ = 78500400.

The previous prime is 90798893. The next prime is 90798923. The reversal of 90798917 is 71989709.

It is not a de Polignac number, because 90798917 - 2¹⁶ = 90733381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90798947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47384 + ... + 49262.

It is an arithmetic number, because the mean of its divisors is an integer number (6497280).

Almost surely, 2^90798917 is an apocalyptic number.

It is an amenable number.

90798917 is a deficient number, since it is larger than the sum of its proper divisors (13157563).

90798917 is a wasteful number, since it uses less digits than its factorization.

90798917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104.

The product of its (nonzero) digits is 285768, while the sum is 50.

The square root of 90798917 is about 9528.8465723822. The cubic root of 90798917 is about 449.4625963318.

The spelling of 90798917 in words is "ninety million, seven hundred ninety-eight thousand, nine hundred seventeen".