4642391 has 4 divisors (see below), whose sum is σ = 4999512. Its totient is φ = 4285272.

The previous prime is 4642387. The next prime is 4642397. The reversal of 4642391 is 1932464.

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 4642391 - 2² = 4642387 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 (4642397) 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, 178541 + ... + 178566.

It is an arithmetic number, because the mean of its divisors is an integer number (1249878).

Almost surely, 2^4642391 is an apocalyptic number.

4642391 is a deficient number, since it is larger than the sum of its proper divisors (357121).

4642391 is a wasteful number, since it uses less digits than its factorization.

4642391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357120.

The product of its digits is 5184, while the sum is 29.

The square root of 4642391 is about 2154.6208483165. The cubic root of 4642391 is about 166.8196626216.

The spelling of 4642391 in words is "four million, six hundred forty-two thousand, three hundred ninety-one".