39842423 has 2 divisors, whose sum is σ = 39842424. Its totient is φ = 39842422.

The previous prime is 39842401. The next prime is 39842437. The reversal of 39842423 is 32424893.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (32424893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39842423 - 2¹⁸ = 39580279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39844423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19921211 + 19921212.

It is an arithmetic number, because the mean of its divisors is an integer number (19921212).

Almost surely, 2^39842423 is an apocalyptic number.

39842423 is a deficient number, since it is larger than the sum of its proper divisors (1).

39842423 is an equidigital number, since it uses as much as digits as its factorization.

39842423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 39842423 is about 6312.0854715379. The cubic root of 39842423 is about 341.5455101920.

The spelling of 39842423 in words is "thirty-nine million, eight hundred forty-two thousand, four hundred twenty-three".