4639791 has 16 divisors (see below), whose sum is σ = 6702080. Its totient is φ = 2838240.

The previous prime is 4639787. The next prime is 4639799. The reversal of 4639791 is 1979364.

It is not a de Polignac number, because 4639791 - 2² = 4639787 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4639799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10350 + ... + 10788.

It is an arithmetic number, because the mean of its divisors is an integer number (418880).

Almost surely, 2^4639791 is an apocalyptic number.

4639791 is a deficient number, since it is larger than the sum of its proper divisors (2062289).

4639791 is a wasteful number, since it uses less digits than its factorization.

4639791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726.

The product of its digits is 40824, while the sum is 39.

The square root of 4639791 is about 2154.0174094004. The cubic root of 4639791 is about 166.7885140088.

The spelling of 4639791 in words is "four million, six hundred thirty-nine thousand, seven hundred ninety-one".