1440539068 has 12 divisors (see below), whose sum is σ = 2526934312. Its totient is φ = 718557840.

The previous prime is 1440539041. The next prime is 1440539071. The reversal of 1440539068 is 8609350441.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1440539068.

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, 426030 + ... + 429397.

Almost surely, 2^1440539068 is an apocalyptic number.

It is an amenable number.

1440539068 is a deficient number, since it is larger than the sum of its proper divisors (1086395244).

1440539068 is a wasteful number, since it uses less digits than its factorization.

1440539068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855852 (or 855850 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1440539068 is about 37954.4341019597. The cubic root of 1440539068 is about 1129.3841288579.

The spelling of 1440539068 in words is "one billion, four hundred forty million, five hundred thirty-nine thousand, sixty-eight".