90491323 has 8 divisors (see below), whose sum is σ = 103184928. Its totient is φ = 78616704.

The previous prime is 90491321. The next prime is 90491327. The reversal of 90491323 is 32319409.

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

It is not a de Polignac number, because 90491323 - 2¹ = 90491321 is a prime.

It is a super-3 number, since 3×90491323³ (a number of 25 digits) contains 333 as substring.

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, 204511 + ... + 204952.

It is an arithmetic number, because the mean of its divisors is an integer number (12898116).

Almost surely, 2^90491323 is an apocalyptic number.

90491323 is a deficient number, since it is larger than the sum of its proper divisors (12693605).

90491323 is a wasteful number, since it uses less digits than its factorization.

90491323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409493.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 90491323 is about 9512.6927312933. The cubic root of 90491323 is about 448.9544830455.

It can be divided in two parts, 9049132 and 3, that multiplied together give a triangular number (27147396 = T₇₃₆₈).

The spelling of 90491323 in words is "ninety million, four hundred ninety-one thousand, three hundred twenty-three".