4919749 has 4 divisors (see below), whose sum is σ = 5209164. Its totient is φ = 4630336.

The previous prime is 4919737. The next prime is 4919767. The reversal of 4919749 is 9479194.

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 3802500 + 1117249 = 1950^2 + 1057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4919749 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 (4919729) 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, 144682 + ... + 144715.

It is an arithmetic number, because the mean of its divisors is an integer number (1302291).

Almost surely, 2^4919749 is an apocalyptic number.

It is an amenable number.

4919749 is a deficient number, since it is larger than the sum of its proper divisors (289415).

4919749 is a wasteful number, since it uses less digits than its factorization.

4919749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289414.

The product of its digits is 81648, while the sum is 43.

The square root of 4919749 is about 2218.0507207907. The cubic root of 4919749 is about 170.0778075200.

The spelling of 4919749 in words is "four million, nine hundred nineteen thousand, seven hundred forty-nine".