39720922193 has 2 divisors, whose sum is σ = 39720922194. Its totient is φ = 39720922192.

The previous prime is 39720922183. The next prime is 39720922223. The reversal of 39720922193 is 39122902793.

39720922193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32217378064 + 7503544129 = 179492^2 + 86623^2 .

It is a cyclic number.

It is not a de Polignac number, because 39720922193 - 2¹⁰ = 39720921169 is a prime.

It is not a weakly prime, because it can be changed into another prime (39720922123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19860461096 + 19860461097.

It is an arithmetic number, because the mean of its divisors is an integer number (19860461097).

Almost surely, 2^39720922193 is an apocalyptic number.

It is an amenable number.

39720922193 is a deficient number, since it is larger than the sum of its proper divisors (1).

39720922193 is an equidigital number, since it uses as much as digits as its factorization.

39720922193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 47.

The spelling of 39720922193 in words is "thirty-nine billion, seven hundred twenty million, nine hundred twenty-two thousand, one hundred ninety-three".