90321877049 has 8 divisors (see below), whose sum is σ = 91963939080. Its totient is φ = 88685020800.

The previous prime is 90321877001. The next prime is 90321877073. The reversal of 90321877049 is 94077812309.

It can be written as a sum of positive squares in 4 ways, for example, as 657563449 + 89664313600 = 25643^2 + 299440^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-90321877049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 90321876988 and 90321877006.

It is not an unprimeable number, because it can be changed into a prime (90321877099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1266422 + ... + 1335839.

It is an arithmetic number, because the mean of its divisors is an integer number (11495492385).

Almost surely, 2^90321877049 is an apocalyptic number.

It is an amenable number.

90321877049 is a deficient number, since it is larger than the sum of its proper divisors (1642062031).

90321877049 is a wasteful number, since it uses less digits than its factorization.

90321877049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602891.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 90321877049 in words is "ninety billion, three hundred twenty-one million, eight hundred seventy-seven thousand, forty-nine".