440147252 has 12 divisors (see below), whose sum is σ = 773565156. Its totient is φ = 219128640.

The previous prime is 440147243. The next prime is 440147261. The reversal of 440147252 is 252741044.

It is an interprime number because it is at equal distance from previous prime (440147243) and next prime (440147261).

It can be written as a sum of positive squares in 2 ways, for example, as 32672656 + 407474596 = 5716^2 + 20186^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235199 + ... + 237062.

It is an arithmetic number, because the mean of its divisors is an integer number (64463763).

Almost surely, 2^440147252 is an apocalyptic number.

It is an amenable number.

440147252 is a deficient number, since it is larger than the sum of its proper divisors (333417904).

440147252 is a wasteful number, since it uses less digits than its factorization.

440147252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472498 (or 472496 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 440147252 is about 20979.6866516161. The cubic root of 440147252 is about 760.6753300156.

Adding to 440147252 its reverse (252741044), we get a palindrome (692888296).

The spelling of 440147252 in words is "four hundred forty million, one hundred forty-seven thousand, two hundred fifty-two".