90569117 has 4 divisors (see below), whose sum is σ = 93692220. Its totient is φ = 87446016.

The previous prime is 90569099. The next prime is 90569131. The reversal of 90569117 is 71196509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71196509 = 1399 ⋅50891.

It can be written as a sum of positive squares in 2 ways, for example, as 77070841 + 13498276 = 8779^2 + 3674^2 .

It is a cyclic number.

It is not a de Polignac number, because 90569117 - 2⁶ = 90569053 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 (90562117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1561508 + ... + 1561565.

It is an arithmetic number, because the mean of its divisors is an integer number (23423055).

Almost surely, 2^90569117 is an apocalyptic number.

It is an amenable number.

90569117 is a deficient number, since it is larger than the sum of its proper divisors (3123103).

90569117 is a wasteful number, since it uses less digits than its factorization.

90569117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123102.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 90569117 is about 9516.7808107574. The cubic root of 90569117 is about 449.0830992864.

The spelling of 90569117 in words is "ninety million, five hundred sixty-nine thousand, one hundred seventeen".