4609904391 has 12 divisors (see below), whose sum is σ = 6688613568. Its totient is φ = 3059486784.

The previous prime is 4609904363. The next prime is 4609904443. The reversal of 4609904391 is 1934099064.

4609904391 is a `hidden beast` number, since 4 + 609 + 9 + 0 + 4 + 39 + 1 = 666.

It is not a de Polignac number, because 4609904391 - 2¹⁹ = 4609380103 is a prime.

It is a super-2 number, since 2×4609904391² = 42502436988322161762, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4609904491) 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, 1146450 + ... + 1150463.

It is an arithmetic number, because the mean of its divisors is an integer number (557384464).

Almost surely, 2^4609904391 is an apocalyptic number.

4609904391 is a deficient number, since it is larger than the sum of its proper divisors (2078709177).

4609904391 is a wasteful number, since it uses less digits than its factorization.

4609904391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297142 (or 2297139 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 4609904391 is about 67896.2767094043. The cubic root of 4609904391 is about 1664.2962683565.

The spelling of 4609904391 in words is "four billion, six hundred nine million, nine hundred four thousand, three hundred ninety-one".