39379639 has 8 divisors (see below), whose sum is σ = 43443792. Its totient is φ = 35463360.

The previous prime is 39379619. The next prime is 39379643. The reversal of 39379639 is 93697393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39379639 - 2⁵ = 39379607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39379592 and 39379601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39379619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36409 + ... + 37474.

It is an arithmetic number, because the mean of its divisors is an integer number (5430474).

Almost surely, 2^39379639 is an apocalyptic number.

39379639 is a deficient number, since it is larger than the sum of its proper divisors (4064153).

39379639 is a wasteful number, since it uses less digits than its factorization.

39379639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73937.

The product of its digits is 826686, while the sum is 49.

The square root of 39379639 is about 6275.3198324866. The cubic root of 39379639 is about 340.2179657739.

The spelling of 39379639 in words is "thirty-nine million, three hundred seventy-nine thousand, six hundred thirty-nine".