90193239109 has 16 divisors (see below), whose sum is σ = 92438323200. Its totient is φ = 87977425536.

The previous prime is 90193239011. The next prime is 90193239113.

90193239109 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 90193239109 - 2³¹ = 88045755461 is a prime.

It is a super-2 number, since 2×90193239109² (a number of 23 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 (90193231109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9648892 + ... + 9658234.

It is an arithmetic number, because the mean of its divisors is an integer number (5777395200).

Almost surely, 2^90193239109 is an apocalyptic number.

It is an amenable number.

90193239109 is a deficient number, since it is larger than the sum of its proper divisors (2245084091).

90193239109 is a wasteful number, since it uses less digits than its factorization.

90193239109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10884.

The product of its (nonzero) digits is 118098, while the sum is 46.

The spelling of 90193239109 in words is "ninety billion, one hundred ninety-three million, two hundred thirty-nine thousand, one hundred nine".