90079001 has 2 divisors, whose sum is σ = 90079002. Its totient is φ = 90079000.

The previous prime is 90078991. The next prime is 90079013. The reversal of 90079001 is 10097009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69139225 + 20939776 = 8315^2 + 4576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90079001 is a prime.

It is a super-2 number, since 2×90079001² = 16228452842316002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90079051) 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, 45039500 + 45039501.

It is an arithmetic number, because the mean of its divisors is an integer number (45039501).

Almost surely, 2^90079001 is an apocalyptic number.

It is an amenable number.

90079001 is a deficient number, since it is larger than the sum of its proper divisors (1).

90079001 is an equidigital number, since it uses as much as digits as its factorization.

90079001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 90079001 is about 9490.9957854800. The cubic root of 90079001 is about 448.2715605511.

The spelling of 90079001 in words is "ninety million, seventy-nine thousand, one".