39456265493 has 2 divisors, whose sum is σ = 39456265494. Its totient is φ = 39456265492.

The previous prime is 39456265487. The next prime is 39456265543.

It is a happy number.

39456265493 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21386722564 + 18069542929 = 146242^2 + 134423^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 39456265493 - 2²⁶ = 39389156629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39456265463) 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 as a sum of consecutive naturals, namely, 19728132746 + 19728132747.

It is an arithmetic number, because the mean of its divisors is an integer number (19728132747).

Almost surely, 2^39456265493 is an apocalyptic number.

It is an amenable number.

39456265493 is a deficient number, since it is larger than the sum of its proper divisors (1).

39456265493 is an equidigital number, since it uses as much as digits as its factorization.

39456265493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20995200, while the sum is 56.

The spelling of 39456265493 in words is "thirty-nine billion, four hundred fifty-six million, two hundred sixty-five thousand, four hundred ninety-three".