1440431334 has 48 divisors (see below), whose sum is σ = 3236360400. Its totient is φ = 462466368.

The previous prime is 1440431309. The next prime is 1440431341. The reversal of 1440431334 is 4331340441.

It is a junction number, because it is equal to n+sod(n) for n = 1440431298 and 1440431307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228132 + ... + 234360.

It is an arithmetic number, because the mean of its divisors is an integer number (67424175).

Almost surely, 2^1440431334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440431334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1618180200).

1440431334 is an abundant number, since it is smaller than the sum of its proper divisors (1795929066).

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

1440431334 is a wasteful number, since it uses less digits than its factorization.

1440431334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6709 (or 6706 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 1440431334 is about 37953.0148209599. The cubic root of 1440431334 is about 1129.3559736333.

Adding to 1440431334 its reverse (4331340441), we get a palindrome (5771771775).

The spelling of 1440431334 in words is "one billion, four hundred forty million, four hundred thirty-one thousand, three hundred thirty-four".