1440040030 has 32 divisors (see below), whose sum is σ = 3045234528. Its totient is φ = 483369600.

The previous prime is 1440040027. The next prime is 1440040033. The reversal of 1440040030 is 300400441.

It is an interprime number because it is at equal distance from previous prime (1440040027) and next prime (1440040033).

It is a junction number, because it is equal to n+sod(n) for n = 1440039986 and 1440040013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440040033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502081 + ... + 504940.

It is an arithmetic number, because the mean of its divisors is an integer number (95163579).

Almost surely, 2^1440040030 is an apocalyptic number.

1440040030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1440040030 is an abundant number, since it is smaller than the sum of its proper divisors (1605194498).

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

1440040030 is a wasteful number, since it uses less digits than its factorization.

1440040030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007052.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1440040030 is about 37947.8593599165. The cubic root of 1440040030 is about 1129.2536983581.

Adding to 1440040030 its reverse (300400441), we get a palindrome (1740440471).

The spelling of 1440040030 in words is "one billion, four hundred forty million, forty thousand, thirty".