4722139 has 4 divisors (see below), whose sum is σ = 4788720. Its totient is φ = 4655560.

The previous prime is 4722121. The next prime is 4722163. The reversal of 4722139 is 9312274.

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 4722139 - 2⁹ = 4721627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4722169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33184 + ... + 33325.

It is an arithmetic number, because the mean of its divisors is an integer number (1197180).

Almost surely, 2^4722139 is an apocalyptic number.

4722139 is a deficient number, since it is larger than the sum of its proper divisors (66581).

4722139 is an equidigital number, since it uses as much as digits as its factorization.

4722139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66580.

The product of its digits is 3024, while the sum is 28.

The square root of 4722139 is about 2173.0483197573. The cubic root of 4722139 is about 167.7694660184.

The spelling of 4722139 in words is "four million, seven hundred twenty-two thousand, one hundred thirty-nine".