90944321 has 8 divisors (see below), whose sum is σ = 98808360. Its totient is φ = 83204352.

The previous prime is 90944303. The next prime is 90944353. The reversal of 90944321 is 12344909.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1849600 + 89094721 = 1360^2 + 9439^2 .

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 90944321 - 2⁶ = 90944257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90944221) 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, 29486 + ... + 32423.

It is an arithmetic number, because the mean of its divisors is an integer number (12351045).

Almost surely, 2^90944321 is an apocalyptic number.

It is an amenable number.

90944321 is a deficient number, since it is larger than the sum of its proper divisors (7864039).

90944321 is a wasteful number, since it uses less digits than its factorization.

90944321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62035.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 90944321 is about 9536.4731950549. The cubic root of 90944321 is about 449.7023892246.

The spelling of 90944321 in words is "ninety million, nine hundred forty-four thousand, three hundred twenty-one".