3954909 has 16 divisors (see below), whose sum is σ = 6156288. Its totient is φ = 2211312.

The previous prime is 3954889. The next prime is 3954959. The reversal of 3954909 is 9094593.

It is a happy number.

It is not a de Polignac number, because 3954909 - 2⁵ = 3954877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3954959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017 + ... + 2990.

It is an arithmetic number, because the mean of its divisors is an integer number (384768).

Almost surely, 2^3954909 is an apocalyptic number.

It is an amenable number.

3954909 is a deficient number, since it is larger than the sum of its proper divisors (2201379).

3954909 is a wasteful number, since it uses less digits than its factorization.

3954909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064.

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

The square root of 3954909 is about 1988.6953009448. The cubic root of 3954909 is about 158.1413705601.

The spelling of 3954909 in words is "three million, nine hundred fifty-four thousand, nine hundred nine".