39702091849 has 16 divisors (see below), whose sum is σ = 46167690240. Its totient is φ = 33435582480.

The previous prime is 39702091837. The next prime is 39702091889. The reversal of 39702091849 is 94819020793.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 39702091849 - 2⁹ = 39702091337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39702091796 and 39702091805.

It is not an unprimeable number, because it can be changed into a prime (39702091829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 772612 + ... + 822394.

It is an arithmetic number, because the mean of its divisors is an integer number (2885480640).

Almost surely, 2^39702091849 is an apocalyptic number.

It is an amenable number.

39702091849 is a deficient number, since it is larger than the sum of its proper divisors (6465598391).

39702091849 is a wasteful number, since it uses less digits than its factorization.

39702091849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51780.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 39702091849 in words is "thirty-nine billion, seven hundred two million, ninety-one thousand, eight hundred forty-nine".