90491371 has 8 divisors (see below), whose sum is σ = 91626080. Its totient is φ = 89361792.

The previous prime is 90491351. The next prime is 90491383. The reversal of 90491371 is 17319409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90491371 - 2⁹ = 90490859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90491321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43585 + ... + 45613.

It is an arithmetic number, because the mean of its divisors is an integer number (11453260).

Almost surely, 2^90491371 is an apocalyptic number.

90491371 is a deficient number, since it is larger than the sum of its proper divisors (1134709).

90491371 is a wasteful number, since it uses less digits than its factorization.

90491371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 90491371 is about 9512.6952542379. The cubic root of 90491371 is about 448.9545624263.

The spelling of 90491371 in words is "ninety million, four hundred ninety-one thousand, three hundred seventy-one".