1244040685 has 8 divisors (see below), whose sum is σ = 1494302976. Its totient is φ = 994263120.

The previous prime is 1244040683. The next prime is 1244040703. The reversal of 1244040685 is 5860404421.

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

It is not a de Polignac number, because 1244040685 - 2¹ = 1244040683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1244040685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244040683) 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, 115509 + ... + 125818.

It is an arithmetic number, because the mean of its divisors is an integer number (186787872).

Almost surely, 2^1244040685 is an apocalyptic number.

It is an amenable number.

1244040685 is a deficient number, since it is larger than the sum of its proper divisors (250262291).

1244040685 is a wasteful number, since it uses less digits than its factorization.

1244040685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242363.

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 1244040685 is about 35270.9609310549. The cubic root of 1244040685 is about 1075.5027567213.

The spelling of 1244040685 in words is "one billion, two hundred forty-four million, forty thousand, six hundred eighty-five".