1440412400 has 60 divisors (see below), whose sum is σ = 3954968592. Its totient is φ = 493854720.

The previous prime is 1440412399. The next prime is 1440412423. The reversal of 1440412400 is 42140441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 254417 + ... + 260016.

Almost surely, 2^1440412400 is an apocalyptic number.

1440412400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440412400 is an abundant number, since it is smaller than the sum of its proper divisors (2514556192).

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

1440412400 is a wasteful number, since it uses less digits than its factorization.

1440412400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514458 (or 514447 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1440412400 is about 37952.7653801406. The cubic root of 1440412400 is about 1129.3510252730.

Adding to 1440412400 its reverse (42140441), we get a palindrome (1482552841).

The spelling of 1440412400 in words is "one billion, four hundred forty million, four hundred twelve thousand, four hundred".