4249475439 has 8 divisors (see below), whose sum is σ = 6181055232. Its totient is φ = 2575439640.

The previous prime is 4249475353. The next prime is 4249475441. The reversal of 4249475439 is 9345749424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4249475439 - 2⁷ = 4249475311 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 4249475391 and 4249475400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4249475449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64385959 + ... + 64386024.

It is an arithmetic number, because the mean of its divisors is an integer number (772631904).

Almost surely, 2^4249475439 is an apocalyptic number.

4249475439 is a deficient number, since it is larger than the sum of its proper divisors (1931579793).

4249475439 is a wasteful number, since it uses less digits than its factorization.

4249475439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128771997.

The product of its digits is 4354560, while the sum is 51.

The square root of 4249475439 is about 65188.0007286617. Note that the first 3 decimals coincide. The cubic root of 4249475439 is about 1619.7392557789.

The spelling of 4249475439 in words is "four billion, two hundred forty-nine million, four hundred seventy-five thousand, four hundred thirty-nine".