90404929123 has 2 divisors, whose sum is σ = 90404929124. Its totient is φ = 90404929122.

The previous prime is 90404929117. The next prime is 90404929189. The reversal of 90404929123 is 32192940409.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90404929123 - 2⁹ = 90404928611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90404929123.

It is not a weakly prime, because it can be changed into another prime (90404929523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45202464561 + 45202464562.

It is an arithmetic number, because the mean of its divisors is an integer number (45202464562).

Almost surely, 2^90404929123 is an apocalyptic number.

90404929123 is a deficient number, since it is larger than the sum of its proper divisors (1).

90404929123 is an equidigital number, since it uses as much as digits as its factorization.

90404929123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 90404929123 in words is "ninety billion, four hundred four million, nine hundred twenty-nine thousand, one hundred twenty-three".