39938932423 has 16 divisors (see below), whose sum is σ = 44717865696. Its totient is φ = 35430658560.

The previous prime is 39938932381. The next prime is 39938932427. The reversal of 39938932423 is 32423983993.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 39938932423 - 2⁹ = 39938931911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39938932427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523486 + ... + 594907.

It is an arithmetic number, because the mean of its divisors is an integer number (2794866606).

Almost surely, 2^39938932423 is an apocalyptic number.

39938932423 is a deficient number, since it is larger than the sum of its proper divisors (4778933273).

39938932423 is a wasteful number, since it uses less digits than its factorization.

39938932423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118514.

The product of its digits is 7558272, while the sum is 55.

The spelling of 39938932423 in words is "thirty-nine billion, nine hundred thirty-eight million, nine hundred thirty-two thousand, four hundred twenty-three".