39970492369 has 2 divisors, whose sum is σ = 39970492370. Its totient is φ = 39970492368.

The previous prime is 39970492363. The next prime is 39970492391. The reversal of 39970492369 is 96329407993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21714969600 + 18255522769 = 147360^2 + 135113^2 .

It is a cyclic number.

It is not a de Polignac number, because 39970492369 - 2²⁹ = 39433621457 is a prime.

It is a super-2 number, since 2×39970492369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39970492363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19985246184 + 19985246185.

It is an arithmetic number, because the mean of its divisors is an integer number (19985246185).

Almost surely, 2^39970492369 is an apocalyptic number.

It is an amenable number.

39970492369 is a deficient number, since it is larger than the sum of its proper divisors (1).

39970492369 is an equidigital number, since it uses as much as digits as its factorization.

39970492369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19840464, while the sum is 61.

The spelling of 39970492369 in words is "thirty-nine billion, nine hundred seventy million, four hundred ninety-two thousand, three hundred sixty-nine".