1440431412 has 24 divisors (see below), whose sum is σ = 3841150656. Its totient is φ = 411551808.

The previous prime is 1440431407. The next prime is 1440431467. The reversal of 1440431412 is 2141340441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8573913 + ... + 8574080.

It is an arithmetic number, because the mean of its divisors is an integer number (160047944).

Almost surely, 2^1440431412 is an apocalyptic number.

1440431412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1440431412 is an abundant number, since it is smaller than the sum of its proper divisors (2400719244).

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

1440431412 is a wasteful number, since it uses less digits than its factorization.

1440431412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17148007 (or 17148005 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1440431412 is about 37953.0158485462. The cubic root of 1440431412 is about 1129.3559940183.

Adding to 1440431412 its reverse (2141340441), we get a palindrome (3581771853).

The spelling of 1440431412 in words is "one billion, four hundred forty million, four hundred thirty-one thousand, four hundred twelve".