1440144474 has 16 divisors (see below), whose sum is σ = 2880674112. Its totient is φ = 479983968.

The previous prime is 1440144469. The next prime is 1440144479. The reversal of 1440144474 is 4744410441.

It is an interprime number because it is at equal distance from previous prime (1440144469) and next prime (1440144479).

It is a super-2 number, since 2×1440144474² = 4148032211985473352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1440144479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61062 + ... + 81294.

It is an arithmetic number, because the mean of its divisors is an integer number (180042132).

Almost surely, 2^1440144474 is an apocalyptic number.

1440144474 is an abundant number, since it is smaller than the sum of its proper divisors (1440529638).

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

1440144474 is a wasteful number, since it uses less digits than its factorization.

1440144474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32101.

The product of its (nonzero) digits is 28672, while the sum is 33.

The square root of 1440144474 is about 37949.2354863705. The cubic root of 1440144474 is about 1129.2809987385.

The spelling of 1440144474 in words is "one billion, four hundred forty million, one hundred forty-four thousand, four hundred seventy-four".