4249665 has 40 divisors (see below), whose sum is σ = 8712000. Its totient is φ = 1941408.

The previous prime is 4249633. The next prime is 4249669. The reversal of 4249665 is 5669424.

It is not a de Polignac number, because 4249665 - 2⁵ = 4249633 is a prime.

It is a super-2 number, since 2×4249665² = 36119305224450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4249669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2086 + ... + 3584.

It is an arithmetic number, because the mean of its divisors is an integer number (217800).

Almost surely, 2^4249665 is an apocalyptic number.

4249665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4249665 is an abundant number, since it is smaller than the sum of its proper divisors (4462335).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4249665 is a wasteful number, since it uses less digits than its factorization.

4249665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523 (or 1514 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 4249665 is about 2061.4715617733. The cubic root of 4249665 is about 161.9763339914.

The spelling of 4249665 in words is "four million, two hundred forty-nine thousand, six hundred sixty-five".