39907339 has 4 divisors (see below), whose sum is σ = 40049640. Its totient is φ = 39765040.

The previous prime is 39907331. The next prime is 39907363. The reversal of 39907339 is 93370993.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 39907339 - 2³ = 39907331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39907295 and 39907304.

It is not an unprimeable number, because it can be changed into a prime (39907331) 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, 70729 + ... + 71290.

It is an arithmetic number, because the mean of its divisors is an integer number (10012410).

Almost surely, 2^39907339 is an apocalyptic number.

39907339 is a deficient number, since it is larger than the sum of its proper divisors (142301).

39907339 is a wasteful number, since it uses less digits than its factorization.

39907339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142300.

The product of its (nonzero) digits is 137781, while the sum is 43.

The square root of 39907339 is about 6317.2255777358. The cubic root of 39907339 is about 341.7309050211.

The spelling of 39907339 in words is "thirty-nine million, nine hundred seven thousand, three hundred thirty-nine".