4457139 has 4 divisors (see below), whose sum is σ = 5942856. Its totient is φ = 2971424.

The previous prime is 4457129. The next prime is 4457143. The reversal of 4457139 is 9317544.

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 4457139 - 2¹¹ = 4455091 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4457129) 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, 742854 + ... + 742859.

It is an arithmetic number, because the mean of its divisors is an integer number (1485714).

Almost surely, 2^4457139 is an apocalyptic number.

4457139 is a deficient number, since it is larger than the sum of its proper divisors (1485717).

4457139 is a wasteful number, since it uses less digits than its factorization.

4457139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485716.

The product of its digits is 15120, while the sum is 33.

The square root of 4457139 is about 2111.1937381491. The cubic root of 4457139 is about 164.5705268178.

The spelling of 4457139 in words is "four million, four hundred fifty-seven thousand, one hundred thirty-nine".