440138212 has 24 divisors (see below), whose sum is σ = 804638016. Its totient is φ = 210263328.

The previous prime is 440138203. The next prime is 440138213. The reversal of 440138212 is 212831044.

It is not an unprimeable number, because it can be changed into a prime (440138213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100623 + ... + 104905.

It is an arithmetic number, because the mean of its divisors is an integer number (33526584).

Almost surely, 2^440138212 is an apocalyptic number.

It is an amenable number.

440138212 is a deficient number, since it is larger than the sum of its proper divisors (364499804).

440138212 is a wasteful number, since it uses less digits than its factorization.

440138212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5427 (or 5425 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 440138212 is about 20979.4712040127. The cubic root of 440138212 is about 760.6701222493.

Adding to 440138212 its reverse (212831044), we get a palindrome (652969256).

It can be divided in two parts, 44013 and 8212, that added together give a palindrome (52225).

The spelling of 440138212 in words is "four hundred forty million, one hundred thirty-eight thousand, two hundred twelve".