1440949646 has 8 divisors (see below), whose sum is σ = 2161588584. Its totient is φ = 720420120.

The previous prime is 1440949639. The next prime is 1440949661. The reversal of 1440949646 is 6469490441.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1440949646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27881 + ... + 60491.

It is an arithmetic number, because the mean of its divisors is an integer number (270198573).

Almost surely, 2^1440949646 is an apocalyptic number.

1440949646 is a deficient number, since it is larger than the sum of its proper divisors (720638938).

1440949646 is a wasteful number, since it uses less digits than its factorization.

1440949646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54706.

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 1440949646 is about 37959.8425444574. The cubic root of 1440949646 is about 1129.4914165254.

The spelling of 1440949646 in words is "one billion, four hundred forty million, nine hundred forty-nine thousand, six hundred forty-six".