3904995 has 32 divisors (see below), whose sum is σ = 6635520. Its totient is φ = 1957760.

The previous prime is 3904981. The next prime is 3904997. The reversal of 3904995 is 5994093.

It is a happy number.

It is not a de Polignac number, because 3904995 - 2⁶ = 3904931 is a prime.

3904995 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3904997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20350 + ... + 20540.

It is an arithmetic number, because the mean of its divisors is an integer number (207360).

Almost surely, 2^3904995 is an apocalyptic number.

3904995 is a deficient number, since it is larger than the sum of its proper divisors (2730525).

3904995 is a wasteful number, since it uses less digits than its factorization.

3904995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275.

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

The square root of 3904995 is about 1976.1060194230. The cubic root of 3904995 is about 157.4732632872.

The spelling of 3904995 in words is "three million, nine hundred four thousand, nine hundred ninety-five".