1043649 has 12 divisors (see below), whose sum is σ = 1533012. Its totient is φ = 684000.

The previous prime is 1043639. The next prime is 1043657. The reversal of 1043649 is 9463401.

1043649 is a `hidden beast` number, since 10 + 4 + 3 + 649 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 57600 + 986049 = 240^2 + 993^2 .

It is not a de Polignac number, because 1043649 - 2⁵ = 1043617 is a prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402 + ... + 1499.

It is an arithmetic number, because the mean of its divisors is an integer number (127751).

2^1043649 is an apocalyptic number.

It is an amenable number.

1043649 is a deficient number, since it is larger than the sum of its proper divisors (489363).

1043649 is a wasteful number, since it uses less digits than its factorization.

1043649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968 (or 1965 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1043649 is about 1021.5914056021. The cubic root of 1043649 is about 101.4342962545.

The spelling of 1043649 in words is "one million, forty-three thousand, six hundred forty-nine".