39999099331 has 4 divisors (see below), whose sum is σ = 40061501064. Its totient is φ = 39936697600.

The previous prime is 39999099313. The next prime is 39999099397. The reversal of 39999099331 is 13399099993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39999099331 - 2⁵ = 39999099299 is a prime.

It is a super-2 number, since 2×39999099331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39999009331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31199905 + ... + 31201186.

It is an arithmetic number, because the mean of its divisors is an integer number (10015375266).

Almost surely, 2^39999099331 is an apocalyptic number.

39999099331 is a deficient number, since it is larger than the sum of its proper divisors (62401733).

39999099331 is an equidigital number, since it uses as much as digits as its factorization.

39999099331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62401732.

The product of its (nonzero) digits is 14348907, while the sum is 64.

The spelling of 39999099331 in words is "thirty-nine billion, nine hundred ninety-nine million, ninety-nine thousand, three hundred thirty-one".