1401444144 has 30 divisors (see below), whose sum is σ = 3922097556. Its totient is φ = 467148000.

The previous prime is 1401444101. The next prime is 1401444151. The reversal of 1401444144 is 4414441041.

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 5 ways as a sum of consecutive naturals, for example, 4865982 + ... + 4866269.

Almost surely, 2^1401444144 is an apocalyptic number.

It is an amenable number.

1401444144 is an abundant number, since it is smaller than the sum of its proper divisors (2520653412).

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

1401444144 is a wasteful number, since it uses less digits than its factorization.

1401444144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9732265 (or 9732256 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 1401444144 is about 37435.8670795802. The cubic root of 1401444144 is about 1119.0734641637.

Adding to 1401444144 its reverse (4414441041), we get a palindrome (5815885185).

The spelling of 1401444144 in words is "one billion, four hundred one million, four hundred forty-four thousand, one hundred forty-four".