90259169 has 32 divisors (see below), whose sum is σ = 124513536. Its totient is φ = 63141120.

The previous prime is 90259121. The next prime is 90259189. The reversal of 90259169 is 96195209.

It is not a de Polignac number, because 90259169 - 2¹⁶ = 90193633 is a prime.

It is a super-2 number, since 2×90259169² = 16293435177141122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90259109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35819 + ... + 38255.

It is an arithmetic number, because the mean of its divisors is an integer number (3891048).

Almost surely, 2^90259169 is an apocalyptic number.

It is an amenable number.

90259169 is a deficient number, since it is larger than the sum of its proper divisors (34254367).

90259169 is a wasteful number, since it uses less digits than its factorization.

90259169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 90259169 is about 9500.4825666910. The cubic root of 90259169 is about 448.5702258101.

The spelling of 90259169 in words is "ninety million, two hundred fifty-nine thousand, one hundred sixty-nine".