39938923 has 2 divisors, whose sum is σ = 39938924. Its totient is φ = 39938922.

The previous prime is 39938911. The next prime is 39938963. The reversal of 39938923 is 32983993.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39938923 - 2⁹ = 39938411 is a prime.

It is not a weakly prime, because it can be changed into another prime (39938963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19969461 + 19969462.

It is an arithmetic number, because the mean of its divisors is an integer number (19969462).

Almost surely, 2^39938923 is an apocalyptic number.

39938923 is a deficient number, since it is larger than the sum of its proper divisors (1).

39938923 is an equidigital number, since it uses as much as digits as its factorization.

39938923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 46.

The square root of 39938923 is about 6319.7249148994. The cubic root of 39938923 is about 341.8210336629.

The spelling of 39938923 in words is "thirty-nine million, nine hundred thirty-eight thousand, nine hundred twenty-three".