39438138 has 32 divisors (see below), whose sum is σ = 83331072. Its totient is φ = 12423600.

The previous prime is 39438127. The next prime is 39438149. The reversal of 39438138 is 83183493.

It is an interprime number because it is at equal distance from previous prime (39438127) and next prime (39438149).

It is a junction number, because it is equal to n+sod(n) for n = 39438096 and 39438105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5533 + ... + 10463.

It is an arithmetic number, because the mean of its divisors is an integer number (2604096).

Almost surely, 2^39438138 is an apocalyptic number.

39438138 is an abundant number, since it is smaller than the sum of its proper divisors (43892934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39438138 is a wasteful number, since it uses less digits than its factorization.

39438138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5010.

The product of its digits is 62208, while the sum is 39.

The square root of 39438138 is about 6279.9791400927. The cubic root of 39438138 is about 340.3863485922.

The spelling of 39438138 in words is "thirty-nine million, four hundred thirty-eight thousand, one hundred thirty-eight".