4249739 has 4 divisors (see below), whose sum is σ = 4576656. Its totient is φ = 3922824.

The previous prime is 4249723. The next prime is 4249741. The reversal of 4249739 is 9379424.

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 4249739 - 2⁴ = 4249723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4249769) 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, 163439 + ... + 163464.

It is an arithmetic number, because the mean of its divisors is an integer number (1144164).

Almost surely, 2^4249739 is an apocalyptic number.

4249739 is a deficient number, since it is larger than the sum of its proper divisors (326917).

4249739 is a wasteful number, since it uses less digits than its factorization.

4249739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326916.

The product of its digits is 54432, while the sum is 38.

The square root of 4249739 is about 2061.4895100388. The cubic root of 4249739 is about 161.9772741580.

The spelling of 4249739 in words is "four million, two hundred forty-nine thousand, seven hundred thirty-nine".