1444191669 has 12 divisors (see below), whose sum is σ = 2086598592. Its totient is φ = 962543400.

The previous prime is 1444191629. The next prime is 1444191673. The reversal of 1444191669 is 9661914441.

It is not a de Polignac number, because 1444191669 - 2¹⁶ = 1444126133 is a prime.

It is a super-2 number, since 2×1444191669² = 4171379153618011122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444191629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19654 + ... + 57224.

It is an arithmetic number, because the mean of its divisors is an integer number (173883216).

Almost surely, 2^1444191669 is an apocalyptic number.

It is an amenable number.

1444191669 is a deficient number, since it is larger than the sum of its proper divisors (642406923).

1444191669 is a wasteful number, since it uses less digits than its factorization.

1444191669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41848 (or 41845 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 1444191669 is about 38002.5218768439. The cubic root of 1444191669 is about 1130.3378708774.

The spelling of 1444191669 in words is "one billion, four hundred forty-four million, one hundred ninety-one thousand, six hundred sixty-nine".