39981091343 has 4 divisors (see below), whose sum is σ = 40073855328. Its totient is φ = 39888327360.

The previous prime is 39981091333. The next prime is 39981091421. The reversal of 39981091343 is 34319018993.

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 39981091343 - 2⁶ = 39981091279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39981091291 and 39981091300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39981091333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46381346 + ... + 46382207.

It is an arithmetic number, because the mean of its divisors is an integer number (10018463832).

Almost surely, 2^39981091343 is an apocalyptic number.

39981091343 is a deficient number, since it is larger than the sum of its proper divisors (92763985).

39981091343 is an equidigital number, since it uses as much as digits as its factorization.

39981091343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92763984.

The product of its (nonzero) digits is 629856, while the sum is 50.

The spelling of 39981091343 in words is "thirty-nine billion, nine hundred eighty-one million, ninety-one thousand, three hundred forty-three".