1440201986 has 16 divisors (see below), whose sum is σ = 2225123136. Its totient is φ = 698607216.

The previous prime is 1440201979. The next prime is 1440201989. The reversal of 1440201986 is 6891020441.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1440201989) 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 7 ways as a sum of consecutive naturals, for example, 2366 + ... + 53721.

It is an arithmetic number, because the mean of its divisors is an integer number (139070196).

Almost surely, 2^1440201986 is an apocalyptic number.

1440201986 is a deficient number, since it is larger than the sum of its proper divisors (784921150).

1440201986 is a wasteful number, since it uses less digits than its factorization.

1440201986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56473.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1440201986 is about 37949.9932279309. The cubic root of 1440201986 is about 1129.2960311064.

The spelling of 1440201986 in words is "one billion, four hundred forty million, two hundred one thousand, nine hundred eighty-six".