90830383621 has 8 divisors (see below), whose sum is σ = 93319396344. Its totient is φ = 88343167680.

The previous prime is 90830383603. The next prime is 90830383639. The reversal of 90830383621 is 12638303809.

It is an interprime number because it is at equal distance from previous prime (90830383603) and next prime (90830383639).

It can be written as a sum of positive squares in 4 ways, for example, as 8429810596 + 82400573025 = 91814^2 + 287055^2 .

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 90830383621 - 2⁷ = 90830383493 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 (90830383421) 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 7 ways as a sum of consecutive naturals, for example, 346390 + ... + 549223.

It is an arithmetic number, because the mean of its divisors is an integer number (11664924543).

Almost surely, 2^90830383621 is an apocalyptic number.

It is an amenable number.

90830383621 is a deficient number, since it is larger than the sum of its proper divisors (2489012723).

90830383621 is a wasteful number, since it uses less digits than its factorization.

90830383621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898391.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 90830383621 in words is "ninety billion, eight hundred thirty million, three hundred eighty-three thousand, six hundred twenty-one".