90441261 has 12 divisors (see below), whose sum is σ = 130873600. Its totient is φ = 60185160.

The previous prime is 90441259. The next prime is 90441269. The reversal of 90441261 is 16214409.

It is not a de Polignac number, because 90441261 - 2¹ = 90441259 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 (90441269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3661 + ... + 13938.

Almost surely, 2^90441261 is an apocalyptic number.

It is an amenable number.

90441261 is a deficient number, since it is larger than the sum of its proper divisors (40432339).

90441261 is a wasteful number, since it uses less digits than its factorization.

90441261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18176 (or 18173 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 90441261 is about 9510.0610408136. The cubic root of 90441261 is about 448.8716769284.

The spelling of 90441261 in words is "ninety million, four hundred forty-one thousand, two hundred sixty-one".