90910091003 has 2 divisors, whose sum is σ = 90910091004. Its totient is φ = 90910091002.

The previous prime is 90910090981. The next prime is 90910091017. The reversal of 90910091003 is 30019001909.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90910091003 - 2²⁴ = 90893313787 is a prime.

It is a super-3 number, since 3×90910091003³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (90910091053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45455045501 + 45455045502.

It is an arithmetic number, because the mean of its divisors is an integer number (45455045502).

Almost surely, 2^90910091003 is an apocalyptic number.

90910091003 is a deficient number, since it is larger than the sum of its proper divisors (1).

90910091003 is an equidigital number, since it uses as much as digits as its factorization.

90910091003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2187, while the sum is 32.

The spelling of 90910091003 in words is "ninety billion, nine hundred ten million, ninety-one thousand, three".