1959644 has 6 divisors (see below), whose sum is σ = 3429384. Its totient is φ = 979820.

The previous prime is 1959637. The next prime is 1959647. The reversal of 1959644 is 4469591.

It is a junction number, because it is equal to n+sod(n) for n = 1959598 and 1959607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1959647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244952 + ... + 244959.

It is an arithmetic number, because the mean of its divisors is an integer number (571564).

2^1959644 is an apocalyptic number.

It is an amenable number.

1959644 is a deficient number, since it is larger than the sum of its proper divisors (1469740).

1959644 is a wasteful number, since it uses less digits than its factorization.

1959644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489915 (or 489913 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 1959644 is about 1399.8728513690. The cubic root of 1959644 is about 125.1389175581.

The spelling of 1959644 in words is "one million, nine hundred fifty-nine thousand, six hundred forty-four".