3995407 has 4 divisors (see below), whose sum is σ = 4302760. Its totient is φ = 3688056.

The previous prime is 3995351. The next prime is 3995413. The reversal of 3995407 is 7045993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7045993 = 199 ⋅35407.

It is a cyclic number.

It is not a de Polignac number, because 3995407 - 2⁷ = 3995279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3995437) 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, 153657 + ... + 153682.

It is an arithmetic number, because the mean of its divisors is an integer number (1075690).

Almost surely, 2^3995407 is an apocalyptic number.

3995407 is a deficient number, since it is larger than the sum of its proper divisors (307353).

3995407 is a wasteful number, since it uses less digits than its factorization.

3995407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307352.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 3995407 is about 1998.8514201911. The cubic root of 3995407 is about 158.6793241517.

The spelling of 3995407 in words is "three million, nine hundred ninety-five thousand, four hundred seven".