1440225940 has 24 divisors (see below), whose sum is σ = 3025556352. Its totient is φ = 575884320.

The previous prime is 1440225911. The next prime is 1440225947. The reversal of 1440225940 is 495220441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440225947) 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, 52537 + ... + 75103.

It is an arithmetic number, because the mean of its divisors is an integer number (126064848).

Almost surely, 2^1440225940 is an apocalyptic number.

1440225940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440225940 is an abundant number, since it is smaller than the sum of its proper divisors (1585330412).

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

1440225940 is a wasteful number, since it uses less digits than its factorization.

1440225940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25767 (or 25765 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1440225940 is about 37950.3088261479. The cubic root of 1440225940 is about 1129.3022920354.

The spelling of 1440225940 in words is "one billion, four hundred forty million, two hundred twenty-five thousand, nine hundred forty".