4640909 has 12 divisors (see below), whose sum is σ = 5744736. Its totient is φ = 3670992.

The previous prime is 4640869. The next prime is 4640929. The reversal of 4640909 is 9090464.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-4640909 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

4640909 is a modest number, since divided by 909 gives 464 as remainder.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4640929) 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, 779 + ... + 3144.

It is an arithmetic number, because the mean of its divisors is an integer number (478728).

Almost surely, 2^4640909 is an apocalyptic number.

It is an amenable number.

4640909 is a deficient number, since it is larger than the sum of its proper divisors (1103827).

4640909 is a wasteful number, since it uses less digits than its factorization.

4640909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3956 (or 3943 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 4640909 is about 2154.2769088490. The cubic root of 4640909 is about 166.8019093379.

The spelling of 4640909 in words is "four million, six hundred forty thousand, nine hundred nine".