1400089944 has 64 divisors (see below), whose sum is σ = 4043053440. Its totient is φ = 399311360.

The previous prime is 1400089939. The next prime is 1400089981. The reversal of 1400089944 is 4499800041.

It is a congruent number.

It is an unprimeable number.

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, 151494 + ... + 160469.

It is an arithmetic number, because the mean of its divisors is an integer number (63172710).

Almost surely, 2^1400089944 is an apocalyptic number.

It is an amenable number.

1400089944 is an abundant number, since it is smaller than the sum of its proper divisors (2642963496).

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

1400089944 is a wasteful number, since it uses less digits than its factorization.

1400089944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312000 (or 311996 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 1400089944 is about 37417.7757756925. The cubic root of 1400089944 is about 1118.7128985584.

Adding to 1400089944 its reverse (4499800041), we get a palindrome (5899889985).

The spelling of 1400089944 in words is "one billion, four hundred million, eighty-nine thousand, nine hundred forty-four".