90259491596839 has 6 divisors (see below), whose sum is σ = 90550648333880. Its totient is φ = 89969268054780.

The previous prime is 90259491596779. The next prime is 90259491596843. The reversal of 90259491596839 is 93869519495209.

It is not a de Polignac number, because 90259491596839 - 2⁹ = 90259491596327 is a prime.

It is a super-2 number, since 2×90259491596839² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90259491596849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 466500459 + ... + 466693900.

Almost surely, 2^{90259491596839} is an apocalyptic number.

90259491596839 is a deficient number, since it is larger than the sum of its proper divisors (291156737041).

90259491596839 is an frugal number, since it uses more digits than its factorization.

90259491596839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933194981 (or 933194670 counting only the distinct ones).

The product of its (nonzero) digits is 1700611200, while the sum is 79.

The spelling of 90259491596839 in words is "ninety trillion, two hundred fifty-nine billion, four hundred ninety-one million, five hundred ninety-six thousand, eight hundred thirty-nine".