4398749 has 4 divisors (see below), whose sum is σ = 4550460. Its totient is φ = 4247040.

The previous prime is 4398743. The next prime is 4398769. The reversal of 4398749 is 9478934.

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 3204100 + 1194649 = 1790^2 + 1093^2 .

It is a cyclic number.

It is not a de Polignac number, because 4398749 - 2¹⁶ = 4333213 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 (4398743) 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, 75812 + ... + 75869.

It is an arithmetic number, because the mean of its divisors is an integer number (1137615).

Almost surely, 2^4398749 is an apocalyptic number.

It is an amenable number.

4398749 is a deficient number, since it is larger than the sum of its proper divisors (151711).

4398749 is a wasteful number, since it uses less digits than its factorization.

4398749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151710.

The product of its digits is 217728, while the sum is 44.

The square root of 4398749 is about 2097.3194797169. The cubic root of 4398749 is about 163.8487227858.

The spelling of 4398749 in words is "four million, three hundred ninety-eight thousand, seven hundred forty-nine".