4609391 has 4 divisors (see below), whose sum is σ = 4674384. Its totient is φ = 4544400.

The previous prime is 4609369. The next prime is 4609393. The reversal of 4609391 is 1939064.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4609391 - 2⁶ = 4609327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4609393) 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 3 ways as a sum of consecutive naturals, for example, 32390 + ... + 32531.

It is an arithmetic number, because the mean of its divisors is an integer number (1168596).

Almost surely, 2^4609391 is an apocalyptic number.

4609391 is a deficient number, since it is larger than the sum of its proper divisors (64993).

4609391 is an equidigital number, since it uses as much as digits as its factorization.

4609391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64992.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 4609391 is about 2146.9492308855. The cubic root of 4609391 is about 166.4234483529.

The spelling of 4609391 in words is "four million, six hundred nine thousand, three hundred ninety-one".