3996907 has 4 divisors (see below), whose sum is σ = 4001976. Its totient is φ = 3991840.

The previous prime is 3996869. The next prime is 3996911. The reversal of 3996907 is 7096993.

3996907 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3996907 - 2¹⁹ = 3472619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3996977) 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, 1069 + ... + 3022.

It is an arithmetic number, because the mean of its divisors is an integer number (1000494).

Almost surely, 2^3996907 is an apocalyptic number.

3996907 is a deficient number, since it is larger than the sum of its proper divisors (5069).

3996907 is an equidigital number, since it uses as much as digits as its factorization.

3996907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5068.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 3996907 is about 1999.2266004633. The cubic root of 3996907 is about 158.6991793843.

The spelling of 3996907 in words is "three million, nine hundred ninety-six thousand, nine hundred seven".