400441230 has 72 divisors (see below), whose sum is σ = 1211143752. Its totient is φ = 91528416.

The previous prime is 400441211. The next prime is 400441231. The reversal of 400441230 is 32144004.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400441231) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 40992 + ... + 49811.

It is an arithmetic number, because the mean of its divisors is an integer number (16821441).

Almost surely, 2^400441230 is an apocalyptic number.

400441230 is an abundant number, since it is smaller than the sum of its proper divisors (810702522).

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

400441230 is a wasteful number, since it uses less digits than its factorization.

400441230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90830 (or 90820 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 400441230 is about 20011.0277097404. The cubic root of 400441230 is about 737.0771177113.

Adding to 400441230 its reverse (32144004), we get a palindrome (432585234).

The spelling of 400441230 in words is "four hundred million, four hundred forty-one thousand, two hundred thirty".