1440434319 has 12 divisors (see below), whose sum is σ = 1953697176. Its totient is φ = 944006608.

The previous prime is 1440434299. The next prime is 1440434329. The reversal of 1440434319 is 9134340441.

It is not a de Polignac number, because 1440434319 - 2⁹ = 1440433807 is a prime.

It is a super-2 number, since 2×1440434319² = 4149702054705987522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1440434319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440434329) 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 11 ways as a sum of consecutive naturals, for example, 58524 + ... + 79409.

It is an arithmetic number, because the mean of its divisors is an integer number (162808098).

Almost surely, 2^1440434319 is an apocalyptic number.

1440434319 is a deficient number, since it is larger than the sum of its proper divisors (513262857).

1440434319 is an equidigital number, since it uses as much as digits as its factorization.

1440434319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138054 (or 137995 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1440434319 is about 37953.0541458787. The cubic root of 1440434319 is about 1129.3567537527.

It can be divided in two parts, 1440434 and 319, that added together give a triangular number (1440753 = T₁₆₉₇).

The spelling of 1440434319 in words is "one billion, four hundred forty million, four hundred thirty-four thousand, three hundred nineteen".