39975352493 has 2 divisors, whose sum is σ = 39975352494. Its totient is φ = 39975352492.

The previous prime is 39975352433. The next prime is 39975352507. The reversal of 39975352493 is 39425357993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32111564809 + 7863787684 = 179197^2 + 88678^2 .

It is a cyclic number.

It is not a de Polignac number, because 39975352493 - 2¹⁴ = 39975336109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39975352433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19987676246 + 19987676247.

It is an arithmetic number, because the mean of its divisors is an integer number (19987676247).

Almost surely, 2^39975352493 is an apocalyptic number.

It is an amenable number.

39975352493 is a deficient number, since it is larger than the sum of its proper divisors (1).

39975352493 is an equidigital number, since it uses as much as digits as its factorization.

39975352493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27556200, while the sum is 59.

The spelling of 39975352493 in words is "thirty-nine billion, nine hundred seventy-five million, three hundred fifty-two thousand, four hundred ninety-three".