90769445290 has 12 divisors (see below), whose sum is σ = 163386716454. Its totient is φ = 36307397024.

The previous prime is 90769445231. The next prime is 90769445293. The reversal of 90769445290 is 9254496709.

It can be written as a sum of positive squares in 3 ways, for example, as 89594258329 + 1175186961 = 299323^2 + 34281^2 .

It is not an unprimeable number, because it can be changed into a prime (90769445293) 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 in 5 ways as a sum of consecutive naturals, for example, 905094 + ... + 1000366.

Almost surely, 2^90769445290 is an apocalyptic number.

90769445290 is a deficient number, since it is larger than the sum of its proper divisors (72617271164).

90769445290 is an frugal number, since it uses more digits than its factorization.

90769445290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190553 (or 95280 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 90769445290 in words is "ninety billion, seven hundred sixty-nine million, four hundred forty-five thousand, two hundred ninety".