90291949 has 4 divisors (see below), whose sum is σ = 98500320. Its totient is φ = 82083580.

The previous prime is 90291937. The next prime is 90291953. The reversal of 90291949 is 94919209.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90291949 - 2²¹ = 88194797 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 (90291919) 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, 4104169 + ... + 4104190.

It is an arithmetic number, because the mean of its divisors is an integer number (24625080).

Almost surely, 2^90291949 is an apocalyptic number.

It is an amenable number.

90291949 is a deficient number, since it is larger than the sum of its proper divisors (8208371).

90291949 is a wasteful number, since it uses less digits than its factorization.

90291949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8208370.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 90291949 is about 9502.2075856087. The cubic root of 90291949 is about 448.6245226106.

The spelling of 90291949 in words is "ninety million, two hundred ninety-one thousand, nine hundred forty-nine".