39872423 has 2 divisors, whose sum is σ = 39872424. Its totient is φ = 39872422.

The previous prime is 39872411. The next prime is 39872461. The reversal of 39872423 is 32427893.

It is a happy number.

39872423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (39872461) can be obtained adding 39872423 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39872423 - 2⁴ = 39872407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39872923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19936211 + 19936212.

It is an arithmetic number, because the mean of its divisors is an integer number (19936212).

Almost surely, 2^39872423 is an apocalyptic number.

39872423 is a deficient number, since it is larger than the sum of its proper divisors (1).

39872423 is an equidigital number, since it uses as much as digits as its factorization.

39872423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 39872423 is about 6314.4614180467. The cubic root of 39872423 is about 341.6312127664.

The spelling of 39872423 in words is "thirty-nine million, eight hundred seventy-two thousand, four hundred twenty-three".