440140312 has 8 divisors (see below), whose sum is σ = 825263100. Its totient is φ = 220070152.

The previous prime is 440140307. The next prime is 440140343. The reversal of 440140312 is 213041044.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 440140312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27508762 + ... + 27508777.

Almost surely, 2^440140312 is an apocalyptic number.

It is an amenable number.

440140312 is a deficient number, since it is larger than the sum of its proper divisors (385122788).

440140312 is a wasteful number, since it uses less digits than its factorization.

440140312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55017545 (or 55017541 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 440140312 is about 20979.5212528790. The cubic root of 440140312 is about 760.6713320243.

Adding to 440140312 its reverse (213041044), we get a palindrome (653181356).

The spelling of 440140312 in words is "four hundred forty million, one hundred forty thousand, three hundred twelve".