39675638 has 4 divisors (see below), whose sum is σ = 59513460. Its totient is φ = 19837818.

The previous prime is 39675613. The next prime is 39675653. The reversal of 39675638 is 83657693.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 39675592 and 39675601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9918908 + ... + 9918911.

It is an arithmetic number, because the mean of its divisors is an integer number (14878365).

Almost surely, 2^39675638 is an apocalyptic number.

39675638 is a deficient number, since it is larger than the sum of its proper divisors (19837822).

39675638 is a wasteful number, since it uses less digits than its factorization.

39675638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19837821.

The product of its digits is 816480, while the sum is 47.

The square root of 39675638 is about 6298.8600555974. The cubic root of 39675638 is about 341.0682606015.

The spelling of 39675638 in words is "thirty-nine million, six hundred seventy-five thousand, six hundred thirty-eight".