3899744 has 12 divisors (see below), whose sum is σ = 7677684. Its totient is φ = 1949856.

The previous prime is 3899737. The next prime is 3899747. The reversal of 3899744 is 4479983.

It is a junction number, because it is equal to n+sod(n) for n = 3899695 and 3899704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60902 + ... + 60965.

It is an arithmetic number, because the mean of its divisors is an integer number (639807).

Almost surely, 2^3899744 is an apocalyptic number.

It is an amenable number.

3899744 is a deficient number, since it is larger than the sum of its proper divisors (3777940).

3899744 is a wasteful number, since it uses less digits than its factorization.

3899744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121877 (or 121869 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 3899744 is about 1974.7769494300. The cubic root of 3899744 is about 157.4026474887.

The spelling of 3899744 in words is "three million, eight hundred ninety-nine thousand, seven hundred forty-four".