440072436 has 12 divisors (see below), whose sum is σ = 1026835712. Its totient is φ = 146690808.

The previous prime is 440072431. The next prime is 440072443. The reversal of 440072436 is 634270044.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440072431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18336340 + ... + 18336363.

Almost surely, 2^440072436 is an apocalyptic number.

It is an amenable number.

440072436 is an abundant number, since it is smaller than the sum of its proper divisors (586763276).

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

440072436 is a wasteful number, since it uses less digits than its factorization.

440072436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36672710 (or 36672708 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 440072436 is about 20977.9035177493. The cubic root of 440072436 is about 760.6322278415.

The spelling of 440072436 in words is "four hundred forty million, seventy-two thousand, four hundred thirty-six".