90931149 has 12 divisors (see below), whose sum is σ = 131936896. Its totient is φ = 60347592.

The previous prime is 90931117. The next prime is 90931151. The reversal of 90931149 is 94113909.

It is not a de Polignac number, because 90931149 - 2⁵ = 90931117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90931349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20647 + ... + 24660.

Almost surely, 2^90931149 is an apocalyptic number.

It is an amenable number.

90931149 is a deficient number, since it is larger than the sum of its proper divisors (41005747).

90931149 is a wasteful number, since it uses less digits than its factorization.

90931149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45536 (or 45533 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 90931149 is about 9535.7825583431. The cubic root of 90931149 is about 449.6806771638.

The spelling of 90931149 in words is "ninety million, nine hundred thirty-one thousand, one hundred forty-nine".