1440189272 has 16 divisors (see below), whose sum is σ = 2859199560. Its totient is φ = 677736064.

The previous prime is 1440189269. The next prime is 1440189277. The reversal of 1440189272 is 2729810441.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440189277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5294678 + ... + 5294949.

Almost surely, 2^1440189272 is an apocalyptic number.

It is an amenable number.

1440189272 is a deficient number, since it is larger than the sum of its proper divisors (1419010288).

1440189272 is a wasteful number, since it uses less digits than its factorization.

1440189272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10589650 (or 10589646 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1440189272 is about 37949.8257176499. The cubic root of 1440189272 is about 1129.2927079817.

The spelling of 1440189272 in words is "one billion, four hundred forty million, one hundred eighty-nine thousand, two hundred seventy-two".