4457749 has 4 divisors (see below), whose sum is σ = 4481280. Its totient is φ = 4434220.

The previous prime is 4457729. The next prime is 4457753. The reversal of 4457749 is 9477544.

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 4457749 - 2¹⁷ = 4326677 is a prime.

It is a super-2 number, since 2×4457749² = 39743052294002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4457729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11479 + ... + 11860.

It is an arithmetic number, because the mean of its divisors is an integer number (1120320).

Almost surely, 2^4457749 is an apocalyptic number.

It is an amenable number.

4457749 is a deficient number, since it is larger than the sum of its proper divisors (23531).

4457749 is a wasteful number, since it uses less digits than its factorization.

4457749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23530.

The product of its digits is 141120, while the sum is 40.

The square root of 4457749 is about 2111.3382012364. The cubic root of 4457749 is about 164.5780341330.

The spelling of 4457749 in words is "four million, four hundred fifty-seven thousand, seven hundred forty-nine".