90081323 has 4 divisors (see below), whose sum is σ = 91558128. Its totient is φ = 88604520.

The previous prime is 90081307. The next prime is 90081331. The reversal of 90081323 is 32318009.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90081323 - 2⁴ = 90081307 is a prime.

It is a super-2 number, since 2×90081323² = 16229289506860658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90081292 and 90081301.

It is not an unprimeable number, because it can be changed into a prime (90081373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738311 + ... + 738432.

It is an arithmetic number, because the mean of its divisors is an integer number (22889532).

Almost surely, 2^90081323 is an apocalyptic number.

90081323 is a deficient number, since it is larger than the sum of its proper divisors (1476805).

90081323 is a wasteful number, since it uses less digits than its factorization.

90081323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476804.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 90081323 is about 9491.1181111606. The cubic root of 90081323 is about 448.2754122724.

The spelling of 90081323 in words is "ninety million, eighty-one thousand, three hundred twenty-three".