90385289026 has 4 divisors (see below), whose sum is σ = 135577933542. Its totient is φ = 45192644512.

The previous prime is 90385288967. The next prime is 90385289047. The reversal of 90385289026 is 62098258309.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79468173801 + 10917115225 = 281901^2 + 104485^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22596322255 + ... + 22596322258.

Almost surely, 2^90385289026 is an apocalyptic number.

90385289026 is a deficient number, since it is larger than the sum of its proper divisors (45192644516).

90385289026 is a wasteful number, since it uses less digits than its factorization.

90385289026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45192644515.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 90385289026 in words is "ninety billion, three hundred eighty-five million, two hundred eighty-nine thousand, twenty-six".