4029909 has 16 divisors (see below), whose sum is σ = 5827584. Its totient is φ = 2462400.

The previous prime is 4029871. The next prime is 4029911. The reversal of 4029909 is 9099204.

It is a happy number.

It is not a de Polignac number, because 4029909 - 2⁹ = 4029397 is a prime.

4029909 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4029909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4029959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7179 + ... + 7719.

It is an arithmetic number, because the mean of its divisors is an integer number (364224).

Almost surely, 2^4029909 is an apocalyptic number.

It is an amenable number.

4029909 is a deficient number, since it is larger than the sum of its proper divisors (1797675).

4029909 is a wasteful number, since it uses less digits than its factorization.

4029909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 4029909 is about 2007.4633246961. The cubic root of 4029909 is about 159.1347696408.

The spelling of 4029909 in words is "four million, twenty-nine thousand, nine hundred nine".