90900907 has 2 divisors, whose sum is σ = 90900908. Its totient is φ = 90900906.

The previous prime is 90900893. The next prime is 90900913. The reversal of 90900907 is 70900909.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90900907 - 2⁷ = 90900779 is a prime.

It is a super-3 number, since 3×90900907³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (90900937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45450453 + 45450454.

It is an arithmetic number, because the mean of its divisors is an integer number (45450454).

Almost surely, 2^90900907 is an apocalyptic number.

90900907 is a deficient number, since it is larger than the sum of its proper divisors (1).

90900907 is an equidigital number, since it uses as much as digits as its factorization.

90900907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 90900907 is about 9534.1967149834. The cubic root of 90900907 is about 449.6308198410.

The spelling of 90900907 in words is "ninety million, nine hundred thousand, nine hundred seven".