90631841 has 2 divisors, whose sum is σ = 90631842. Its totient is φ = 90631840.

The previous prime is 90631823. The next prime is 90631859. The reversal of 90631841 is 14813609.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (90631823) and next prime (90631859).

It can be written as a sum of positive squares in only one way, i.e., 68541841 + 22090000 = 8279^2 + 4700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90631841 is a prime.

It is a super-3 number, since 3×90631841³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 90631798 and 90631807.

It is not a weakly prime, because it can be changed into another prime (90631741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45315920 + 45315921.

It is an arithmetic number, because the mean of its divisors is an integer number (45315921).

Almost surely, 2^90631841 is an apocalyptic number.

It is an amenable number.

90631841 is a deficient number, since it is larger than the sum of its proper divisors (1).

90631841 is an equidigital number, since it uses as much as digits as its factorization.

90631841 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 90631841 is about 9520.0756824723. The cubic root of 90631841 is about 449.1867467882.

The spelling of 90631841 in words is "ninety million, six hundred thirty-one thousand, eight hundred forty-one".