39864005 has 8 divisors (see below), whose sum is σ = 48038400. Its totient is φ = 31756816.

The previous prime is 39864001. The next prime is 39864007. The reversal of 39864005 is 50046893.

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

It is a cyclic number.

It is not a de Polignac number, because 39864005 - 2² = 39864001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39864001) 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, 15485 + ... + 17874.

It is an arithmetic number, because the mean of its divisors is an integer number (6004800).

Almost surely, 2^39864005 is an apocalyptic number.

It is an amenable number.

39864005 is a deficient number, since it is larger than the sum of its proper divisors (8174395).

39864005 is a wasteful number, since it uses less digits than its factorization.

39864005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33603.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 39864005 is about 6313.7948176988. The cubic root of 39864005 is about 341.6071689642.

The spelling of 39864005 in words is "thirty-nine million, eight hundred sixty-four thousand, five".