39425794469 has 2 divisors, whose sum is σ = 39425794470. Its totient is φ = 39425794468.

The previous prime is 39425794423. The next prime is 39425794487. The reversal of 39425794469 is 96449752493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29777643844 + 9648150625 = 172562^2 + 98225^2 .

It is a cyclic number.

It is not a de Polignac number, because 39425794469 - 2¹² = 39425790373 is a prime.

It is a super-2 number, since 2×39425794469² (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 (39425793469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19712897234 + 19712897235.

It is an arithmetic number, because the mean of its divisors is an integer number (19712897235).

Almost surely, 2^39425794469 is an apocalyptic number.

It is an amenable number.

39425794469 is a deficient number, since it is larger than the sum of its proper divisors (1).

39425794469 is an equidigital number, since it uses as much as digits as its factorization.

39425794469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58786560, while the sum is 62.

The spelling of 39425794469 in words is "thirty-nine billion, four hundred twenty-five million, seven hundred ninety-four thousand, four hundred sixty-nine".