90383081 has 2 divisors, whose sum is σ = 90383082. Its totient is φ = 90383080.

The previous prime is 90383039. The next prime is 90383089. The reversal of 90383081 is 18038309.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89208025 + 1175056 = 9445^2 + 1084^2 .

It is a cyclic number.

It is not a de Polignac number, because 90383081 - 2¹⁰ = 90382057 is a prime.

It is a super-2 number, since 2×90383081² = 16338202662105122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90383089) 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 as a sum of consecutive naturals, namely, 45191540 + 45191541.

It is an arithmetic number, because the mean of its divisors is an integer number (45191541).

Almost surely, 2^90383081 is an apocalyptic number.

It is an amenable number.

90383081 is a deficient number, since it is larger than the sum of its proper divisors (1).

90383081 is an equidigital number, since it uses as much as digits as its factorization.

90383081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 90383081 is about 9507.0016829703. The cubic root of 90383081 is about 448.7754046599.

Subtracting from 90383081 its sum of digits (32), we obtain a square (90383049 = 9507²).

It can be divided in two parts, 9038308 and 1, that added together give a palindrome (9038309).

The spelling of 90383081 in words is "ninety million, three hundred eighty-three thousand, eighty-one".