39139748 has 12 divisors (see below), whose sum is σ = 70165452. Its totient is φ = 19092480.

The previous prime is 39139741. The next prime is 39139781. The reversal of 39139748 is 84793193.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16176484 + 22963264 = 4022^2 + 4792^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39139699 and 39139708.

It is not an unprimeable number, because it can be changed into a prime (39139741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119165 + ... + 119492.

It is an arithmetic number, because the mean of its divisors is an integer number (5847121).

Almost surely, 2^39139748 is an apocalyptic number.

It is an amenable number.

39139748 is a deficient number, since it is larger than the sum of its proper divisors (31025704).

39139748 is a wasteful number, since it uses less digits than its factorization.

39139748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238702 (or 238700 counting only the distinct ones).

The product of its digits is 163296, while the sum is 44.

The square root of 39139748 is about 6256.1767877834. The cubic root of 39139748 is about 339.5257170227.

The spelling of 39139748 in words is "thirty-nine million, one hundred thirty-nine thousand, seven hundred forty-eight".