3996909 has 12 divisors (see below), whose sum is σ = 6598176. Its totient is φ = 2283912.

The previous prime is 3996869. The next prime is 3996911. The reversal of 3996909 is 9096993.

It is not a de Polignac number, because 3996909 - 2⁸ = 3996653 is a prime.

3996909 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3996919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31659 + ... + 31784.

It is an arithmetic number, because the mean of its divisors is an integer number (549848).

Almost surely, 2^3996909 is an apocalyptic number.

It is an amenable number.

3996909 is a deficient number, since it is larger than the sum of its proper divisors (2601267).

3996909 is a wasteful number, since it uses less digits than its factorization.

3996909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63456 (or 63453 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 45.

The square root of 3996909 is about 1999.2271006567. The cubic root of 3996909 is about 158.6992058546.

The spelling of 3996909 in words is "three million, nine hundred ninety-six thousand, nine hundred nine".