39961707 has 8 divisors (see below), whose sum is σ = 53328384. Its totient is φ = 26618088.

The previous prime is 39961699. The next prime is 39961709. The reversal of 39961707 is 70716993.

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

It is not a de Polignac number, because 39961707 - 2³ = 39961699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39961709) 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, 1203 + ... + 9020.

It is an arithmetic number, because the mean of its divisors is an integer number (6666048).

Almost surely, 2^39961707 is an apocalyptic number.

39961707 is a deficient number, since it is larger than the sum of its proper divisors (13366677).

39961707 is a wasteful number, since it uses less digits than its factorization.

39961707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11529.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 39961707 is about 6321.5272679947. The cubic root of 39961707 is about 341.8860209765.

The spelling of 39961707 in words is "thirty-nine million, nine hundred sixty-one thousand, seven hundred seven".