4397649 has 8 divisors (see below), whose sum is σ = 5988480. Its totient is φ = 2869296.

The previous prime is 4397599. The next prime is 4397651. The reversal of 4397649 is 9467934.

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

It is not a de Polignac number, because 4397649 - 2⁷ = 4397521 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4397649.

It is not an unprimeable number, because it can be changed into a prime (4397149) 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, 15454 + ... + 15735.

It is an arithmetic number, because the mean of its divisors is an integer number (748560).

Almost surely, 2^4397649 is an apocalyptic number.

It is an amenable number.

4397649 is a deficient number, since it is larger than the sum of its proper divisors (1590831).

4397649 is a wasteful number, since it uses less digits than its factorization.

4397649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31239.

The product of its digits is 163296, while the sum is 42.

The square root of 4397649 is about 2097.0572238258. The cubic root of 4397649 is about 163.8350637037.

The spelling of 4397649 in words is "four million, three hundred ninety-seven thousand, six hundred forty-nine".