4566391 has 4 divisors (see below), whose sum is σ = 4596784. Its totient is φ = 4536000.

The previous prime is 4566383. The next prime is 4566409. The reversal of 4566391 is 1936654.

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 4566391 - 2³ = 4566383 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 (4566301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14970 + ... + 15271.

It is an arithmetic number, because the mean of its divisors is an integer number (1149196).

Almost surely, 2^4566391 is an apocalyptic number.

4566391 is a deficient number, since it is larger than the sum of its proper divisors (30393).

4566391 is a wasteful number, since it uses less digits than its factorization.

4566391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30392.

The product of its digits is 19440, while the sum is 34.

The square root of 4566391 is about 2136.9115564290. The cubic root of 4566391 is about 165.9043214060.

It can be divided in two parts, 45663 and 91, that added together give a palindrome (45754).

The spelling of 4566391 in words is "four million, five hundred sixty-six thousand, three hundred ninety-one".