39679339 has 4 divisors (see below), whose sum is σ = 45347824. Its totient is φ = 34010856.

The previous prime is 39679331. The next prime is 39679397. The reversal of 39679339 is 93397693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93397693 = 1997 ⋅46769.

It is a cyclic number.

It is not a de Polignac number, because 39679339 - 2³ = 39679331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39679292 and 39679301.

It is not an unprimeable number, because it can be changed into a prime (39679331) 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, 2834232 + ... + 2834245.

It is an arithmetic number, because the mean of its divisors is an integer number (11336956).

Almost surely, 2^39679339 is an apocalyptic number.

39679339 is a deficient number, since it is larger than the sum of its proper divisors (5668485).

39679339 is an equidigital number, since it uses as much as digits as its factorization.

39679339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5668484.

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

The square root of 39679339 is about 6299.1538320635. The cubic root of 39679339 is about 341.0788653827.

The spelling of 39679339 in words is "thirty-nine million, six hundred seventy-nine thousand, three hundred thirty-nine".