4039995 has 8 divisors (see below), whose sum is σ = 6464016. Its totient is φ = 2154656.

The previous prime is 4039991. The next prime is 4040009. The reversal of 4039995 is 5999304.

It is a happy number.

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 4039995 - 2² = 4039991 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4039991) 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, 134652 + ... + 134681.

It is an arithmetic number, because the mean of its divisors is an integer number (808002).

Almost surely, 2^4039995 is an apocalyptic number.

4039995 is a deficient number, since it is larger than the sum of its proper divisors (2424021).

4039995 is a wasteful number, since it uses less digits than its factorization.

4039995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269341.

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 4039995 is about 2009.9738804273. The cubic root of 4039995 is about 159.2674191313.

The spelling of 4039995 in words is "four million, thirty-nine thousand, nine hundred ninety-five".