39712469 has 2 divisors, whose sum is σ = 39712470. Its totient is φ = 39712468.

The previous prime is 39712427. The next prime is 39712471. The reversal of 39712469 is 96421793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31080625 + 8631844 = 5575^2 + 2938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39712469 is a prime.

It is a super-2 number, since 2×39712469² = 3154160388151922, which contains 22 as substring.

Together with 39712471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39714469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19856234 + 19856235.

It is an arithmetic number, because the mean of its divisors is an integer number (19856235).

Almost surely, 2^39712469 is an apocalyptic number.

It is an amenable number.

39712469 is a deficient number, since it is larger than the sum of its proper divisors (1).

39712469 is an equidigital number, since it uses as much as digits as its factorization.

39712469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 39712469 is about 6301.7830016591. The cubic root of 39712469 is about 341.1737661515.

The spelling of 39712469 in words is "thirty-nine million, seven hundred twelve thousand, four hundred sixty-nine".