39479393 has 2 divisors, whose sum is σ = 39479394. Its totient is φ = 39479392.

The previous prime is 39479387. The next prime is 39479413. The reversal of 39479393 is 39397493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37356544 + 2122849 = 6112^2 + 1457^2 .

It is a cyclic number.

It is not a de Polignac number, because 39479393 - 2⁸ = 39479137 is a prime.

It is not a weakly prime, because it can be changed into another prime (39479303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19739696 + 19739697.

It is an arithmetic number, because the mean of its divisors is an integer number (19739697).

Almost surely, 2^39479393 is an apocalyptic number.

It is an amenable number.

39479393 is a deficient number, since it is larger than the sum of its proper divisors (1).

39479393 is an equidigital number, since it uses as much as digits as its factorization.

39479393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 47.

The square root of 39479393 is about 6283.2629262191. The cubic root of 39479393 is about 340.5049963940.

The spelling of 39479393 in words is "thirty-nine million, four hundred seventy-nine thousand, three hundred ninety-three".