39231794869 has 2 divisors, whose sum is σ = 39231794870. Its totient is φ = 39231794868.

The previous prime is 39231794857. The next prime is 39231794881. The reversal of 39231794869 is 96849713293.

39231794869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (39231794857) and next prime (39231794881).

It can be written as a sum of positive squares in only one way, i.e., 37186494244 + 2045300625 = 192838^2 + 45225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39231794869 is a prime.

It is a super-2 number, since 2×39231794869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39238794869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19615897434 + 19615897435.

It is an arithmetic number, because the mean of its divisors is an integer number (19615897435).

Almost surely, 2^39231794869 is an apocalyptic number.

It is an amenable number.

39231794869 is a deficient number, since it is larger than the sum of its proper divisors (1).

39231794869 is an equidigital number, since it uses as much as digits as its factorization.

39231794869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17635968, while the sum is 61.

The spelling of 39231794869 in words is "thirty-nine billion, two hundred thirty-one million, seven hundred ninety-four thousand, eight hundred sixty-nine".