39974323 has 2 divisors, whose sum is σ = 39974324. Its totient is φ = 39974322.

The previous prime is 39974321. The next prime is 39974359. The reversal of 39974323 is 32347993.

It is a weak prime.

It is an emirp because it is prime and its reverse (32347993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39974323 - 2¹ = 39974321 is a prime.

Together with 39974321, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (39974321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19987161 + 19987162.

It is an arithmetic number, because the mean of its divisors is an integer number (19987162).

Almost surely, 2^39974323 is an apocalyptic number.

39974323 is a deficient number, since it is larger than the sum of its proper divisors (1).

39974323 is an equidigital number, since it uses as much as digits as its factorization.

39974323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 40.

The square root of 39974323 is about 6322.5250493770. The cubic root of 39974323 is about 341.9219952508.

The spelling of 39974323 in words is "thirty-nine million, nine hundred seventy-four thousand, three hundred twenty-three".