90492809338 has 4 divisors (see below), whose sum is σ = 135739214010. Its totient is φ = 45246404668.

The previous prime is 90492809317. The next prime is 90492809339. The reversal of 90492809338 is 83390829409.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83390829409 = 103 ⋅809619703.

It can be written as a sum of positive squares in only one way, i.e., 86316677209 + 4176132129 = 293797^2 + 64623^2 .

It is not an unprimeable number, because it can be changed into a prime (90492809339) 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 as a sum of consecutive naturals, namely, 22623202333 + ... + 22623202336.

Almost surely, 2^90492809338 is an apocalyptic number.

90492809338 is a deficient number, since it is larger than the sum of its proper divisors (45246404672).

90492809338 is a wasteful number, since it uses less digits than its factorization.

90492809338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45246404671.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 90492809338 in words is "ninety billion, four hundred ninety-two million, eight hundred nine thousand, three hundred thirty-eight".