4006749 has 8 divisors (see below), whose sum is σ = 5433120. Its totient is φ = 2625776.

The previous prime is 4006741. The next prime is 4006763. The reversal of 4006749 is 9476004.

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

It is a cyclic number.

It is not a de Polignac number, because 4006749 - 2³ = 4006741 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4006741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11142 + ... + 11495.

It is an arithmetic number, because the mean of its divisors is an integer number (679140).

Almost surely, 2^4006749 is an apocalyptic number.

It is an amenable number.

4006749 is a deficient number, since it is larger than the sum of its proper divisors (1426371).

4006749 is a wasteful number, since it uses less digits than its factorization.

4006749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22699.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 4006749 is about 2001.6865388966. The cubic root of 4006749 is about 158.8293331132.

The spelling of 4006749 in words is "four million, six thousand, seven hundred forty-nine".