90003961 has 2 divisors, whose sum is σ = 90003962. Its totient is φ = 90003960.

The previous prime is 90003937. The next prime is 90003971. The reversal of 90003961 is 16930009.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49617936 + 40386025 = 7044^2 + 6355^2 .

It is a cyclic number.

It is not a de Polignac number, because 90003961 - 2⁷ = 90003833 is a prime.

It is not a weakly prime, because it can be changed into another prime (90003971) 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 as a sum of consecutive naturals, namely, 45001980 + 45001981.

It is an arithmetic number, because the mean of its divisors is an integer number (45001981).

Almost surely, 2^90003961 is an apocalyptic number.

It is an amenable number.

90003961 is a deficient number, since it is larger than the sum of its proper divisors (1).

90003961 is an equidigital number, since it uses as much as digits as its factorization.

90003961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 90003961 is about 9487.0417412384. The cubic root of 90003961 is about 448.1470489460.

The spelling of 90003961 in words is "ninety million, three thousand, nine hundred sixty-one".