90321855739 has 8 divisors (see below), whose sum is σ = 97286699840. Its totient is φ = 83578117896.

The previous prime is 90321855713. The next prime is 90321855773. The reversal of 90321855739 is 93755812309.

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

It is a cyclic number.

It is not a de Polignac number, because 90321855739 - 2⁹ = 90321855227 is a prime.

It is a super-2 number, since 2×90321855739² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90321856739) 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 in 7 ways as a sum of consecutive naturals, for example, 55275717 + ... + 55277350.

It is an arithmetic number, because the mean of its divisors is an integer number (12160837480).

Almost surely, 2^90321855739 is an apocalyptic number.

90321855739 is a deficient number, since it is larger than the sum of its proper divisors (6964844101).

90321855739 is a wasteful number, since it uses less digits than its factorization.

90321855739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110553129.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 90321855739 in words is "ninety billion, three hundred twenty-one million, eight hundred fifty-five thousand, seven hundred thirty-nine".