1444749986 has 16 divisors (see below), whose sum is σ = 2203960128. Its totient is φ = 710110800.

The previous prime is 1444749973. The next prime is 1444750001. The reversal of 1444749986 is 6899474441.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338381 + ... + 342623.

It is an arithmetic number, because the mean of its divisors is an integer number (137747508).

Almost surely, 2^1444749986 is an apocalyptic number.

1444749986 is a deficient number, since it is larger than the sum of its proper divisors (759210142).

1444749986 is a wasteful number, since it uses less digits than its factorization.

1444749986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7097.

The product of its digits is 6967296, while the sum is 56.

The square root of 1444749986 is about 38009.8669558314. The cubic root of 1444749986 is about 1130.4835130280.

The spelling of 1444749986 in words is "one billion, four hundred forty-four million, seven hundred forty-nine thousand, nine hundred eighty-six".