90004969 has 2 divisors, whose sum is σ = 90004970. Its totient is φ = 90004968.

The previous prime is 90004961. The next prime is 90004973. The reversal of 90004969 is 96940009.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62599744 + 27405225 = 7912^2 + 5235^2 .

It is a cyclic number.

It is not a de Polignac number, because 90004969 - 2³ = 90004961 is a prime.

It is a super-2 number, since 2×90004969² = 16201788889381922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90004961) 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, 45002484 + 45002485.

It is an arithmetic number, because the mean of its divisors is an integer number (45002485).

Almost surely, 2^90004969 is an apocalyptic number.

It is an amenable number.

90004969 is a deficient number, since it is larger than the sum of its proper divisors (1).

90004969 is an equidigital number, since it uses as much as digits as its factorization.

90004969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 90004969 is about 9487.0948661853. The cubic root of 90004969 is about 448.1487219485.

The spelling of 90004969 in words is "ninety million, four thousand, nine hundred sixty-nine".