1444079688 has 64 divisors (see below), whose sum is σ = 3828409920. Its totient is φ = 452352000.

The previous prime is 1444079687. The next prime is 1444079713. The reversal of 1444079688 is 8869704441.

It is a super-2 number, since 2×1444079688² = 4170732290588354688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 1444079688.

It is not an unprimeable number, because it can be changed into a prime (1444079683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308163 + ... + 312813.

It is an arithmetic number, because the mean of its divisors is an integer number (59818905).

Almost surely, 2^1444079688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1444079688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1914204960).

1444079688 is an abundant number, since it is smaller than the sum of its proper divisors (2384330232).

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

1444079688 is a wasteful number, since it uses less digits than its factorization.

1444079688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5438 (or 5434 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 1444079688 is about 38001.0485118503. The cubic root of 1444079688 is about 1130.3086550793.

The spelling of 1444079688 in words is "one billion, four hundred forty-four million, seventy-nine thousand, six hundred eighty-eight".