1444899894 has 32 divisors (see below), whose sum is σ = 2987919360. Its totient is φ = 465331200.

The previous prime is 1444899893. The next prime is 1444899923. The reversal of 1444899894 is 4989984441.

It is a super-2 number, since 2×1444899894² = 4175471407362422472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444899893) 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 15 ways as a sum of consecutive naturals, for example, 113167 + ... + 125285.

It is an arithmetic number, because the mean of its divisors is an integer number (93372480).

Almost surely, 2^1444899894 is an apocalyptic number.

1444899894 is an abundant number, since it is smaller than the sum of its proper divisors (1543019466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1444899894 is a wasteful number, since it uses less digits than its factorization.

1444899894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12796.

The product of its digits is 11943936, while the sum is 60.

The square root of 1444899894 is about 38011.8388663322. The cubic root of 1444899894 is about 1130.5226115256.

The spelling of 1444899894 in words is "one billion, four hundred forty-four million, eight hundred ninety-nine thousand, eight hundred ninety-four".