90409000723 has 2 divisors, whose sum is σ = 90409000724. Its totient is φ = 90409000722.

The previous prime is 90409000711. The next prime is 90409000751. The reversal of 90409000723 is 32700090409.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90409000723 - 2²¹ = 90406903571 is a prime.

It is not a weakly prime, because it can be changed into another prime (90409000763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45204500361 + 45204500362.

It is an arithmetic number, because the mean of its divisors is an integer number (45204500362).

Almost surely, 2^90409000723 is an apocalyptic number.

90409000723 is a deficient number, since it is larger than the sum of its proper divisors (1).

90409000723 is an equidigital number, since it uses as much as digits as its factorization.

90409000723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The spelling of 90409000723 in words is "ninety billion, four hundred nine million, seven hundred twenty-three", and thus it is an aban number.