39909090993 has 16 divisors (see below), whose sum is σ = 53941159680. Its totient is φ = 26242235136.

The previous prime is 39909090953. The next prime is 39909091003.

39909090993 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 39909090993 - 2¹² = 39909086897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39909090953) 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, 145371 + ... + 317727.

It is an arithmetic number, because the mean of its divisors is an integer number (3371322480).

Almost surely, 2^39909090993 is an apocalyptic number.

It is an amenable number.

39909090993 is a deficient number, since it is larger than the sum of its proper divisors (14032068687).

39909090993 is a wasteful number, since it uses less digits than its factorization.

39909090993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173416.

The product of its (nonzero) digits is 4782969, while the sum is 60.

The spelling of 39909090993 in words is "thirty-nine billion, nine hundred nine million, ninety thousand, nine hundred ninety-three".