1440014478 has 64 divisors (see below), whose sum is σ = 3517240320. Its totient is φ = 383657472.

The previous prime is 1440014473. The next prime is 1440014489. The reversal of 1440014478 is 8744100441.

It is a super-2 number, since 2×1440014478² = 4147283393699224968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440014473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68575 + ... + 87077.

It is an arithmetic number, because the mean of its divisors is an integer number (54956880).

Almost surely, 2^1440014478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440014478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1758620160).

1440014478 is an abundant number, since it is smaller than the sum of its proper divisors (2077225842).

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

1440014478 is a wasteful number, since it uses less digits than its factorization.

1440014478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18641.

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 1440014478 is about 37947.5226859409. The cubic root of 1440014478 is about 1129.2470191778.

The spelling of 1440014478 in words is "one billion, four hundred forty million, fourteen thousand, four hundred seventy-eight".