90893569 has 16 divisors (see below), whose sum is σ = 103194000. Its totient is φ = 79462656.

The previous prime is 90893567. The next prime is 90893623. The reversal of 90893569 is 96539809.

It can be written as a sum of positive squares in 8 ways, for example, as 263169 + 90630400 = 513^2 + 9520^2 .

It is not a de Polignac number, because 90893569 - 2¹ = 90893567 is a prime.

It is a super-2 number, since 2×90893569² = 16523281771115522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90893563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17707 + ... + 22255.

It is an arithmetic number, because the mean of its divisors is an integer number (6449625).

Almost surely, 2^90893569 is an apocalyptic number.

It is an amenable number.

90893569 is a deficient number, since it is larger than the sum of its proper divisors (12300431).

90893569 is a wasteful number, since it uses less digits than its factorization.

90893569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 90893569 is about 9533.8118819284. The cubic root of 90893569 is about 449.6187206594.

The spelling of 90893569 in words is "ninety million, eight hundred ninety-three thousand, five hundred sixty-nine".