4309409 has 16 divisors (see below), whose sum is σ = 4972800. Its totient is φ = 3701376.

The previous prime is 4309399. The next prime is 4309411. The reversal of 4309409 is 9049034.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4309409 - 2⁸ = 4309153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4309489) 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, 17912 + ... + 18150.

It is an arithmetic number, because the mean of its divisors is an integer number (310800).

Almost surely, 2^4309409 is an apocalyptic number.

It is an amenable number.

4309409 is a deficient number, since it is larger than the sum of its proper divisors (663391).

4309409 is a wasteful number, since it uses less digits than its factorization.

4309409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 4309409 is about 2075.9116069814. The cubic root of 4309409 is about 162.7318536512.

The spelling of 4309409 in words is "four million, three hundred nine thousand, four hundred nine".