444712440 has 64 divisors (see below), whose sum is σ = 1335605760. Its totient is φ = 118459520.

The previous prime is 444712439. The next prime is 444712447. The reversal of 444712440 is 44217444.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 444712398 and 444712407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444712447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162685 + ... + 165395.

It is an arithmetic number, because the mean of its divisors is an integer number (20868840).

Almost surely, 2^444712440 is an apocalyptic number.

444712440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444712440 is an abundant number, since it is smaller than the sum of its proper divisors (890893320).

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

444712440 is a wasteful number, since it uses less digits than its factorization.

444712440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092 (or 4088 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 30.

The square root of 444712440 is about 21088.2061826036. The cubic root of 444712440 is about 763.2961867132.

Adding to 444712440 its reverse (44217444), we get a palindrome (488929884).

The spelling of 444712440 in words is "four hundred forty-four million, seven hundred twelve thousand, four hundred forty".