4397749 has 4 divisors (see below), whose sum is σ = 4410700. Its totient is φ = 4384800.

The previous prime is 4397737. The next prime is 4397777. The reversal of 4397749 is 9477934.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2387025 + 2010724 = 1545^2 + 1418^2 .

It is a cyclic number.

It is not a de Polignac number, because 4397749 - 2⁵ = 4397717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4397779) 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, 5952 + ... + 6649.

It is an arithmetic number, because the mean of its divisors is an integer number (1102675).

Almost surely, 2^4397749 is an apocalyptic number.

It is an amenable number.

4397749 is a deficient number, since it is larger than the sum of its proper divisors (12951).

4397749 is a wasteful number, since it uses less digits than its factorization.

4397749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12950.

The product of its digits is 190512, while the sum is 43.

The square root of 4397749 is about 2097.0810666257. The cubic root of 4397749 is about 163.8363055326.

The spelling of 4397749 in words is "four million, three hundred ninety-seven thousand, seven hundred forty-nine".