4638709 has 4 divisors (see below), whose sum is σ = 4840416. Its totient is φ = 4437004.

The previous prime is 4638691. The next prime is 4638721. The reversal of 4638709 is 9078364.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4638709 - 2⁵ = 4638677 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638509) 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, 100819 + ... + 100864.

It is an arithmetic number, because the mean of its divisors is an integer number (1210104).

Almost surely, 2^4638709 is an apocalyptic number.

It is an amenable number.

4638709 is a deficient number, since it is larger than the sum of its proper divisors (201707).

4638709 is a wasteful number, since it uses less digits than its factorization.

4638709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201706.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 4638709 is about 2153.7662361547. The cubic root of 4638709 is about 166.7755479648.

The spelling of 4638709 in words is "four million, six hundred thirty-eight thousand, seven hundred nine".