400230444040 has 32 divisors (see below), whose sum is σ = 1029163999680. Its totient is φ = 137221866432.

The previous prime is 400230444037. The next prime is 400230444043. The reversal of 400230444040 is 40444032004.

It is an interprime number because it is at equal distance from previous prime (400230444037) and next prime (400230444043).

It is a junction number, because it is equal to n+sod(n) for n = 400230443996 and 400230444014.

It is not an unprimeable number, because it can be changed into a prime (400230444043) 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, 714696942 + ... + 714697501.

It is an arithmetic number, because the mean of its divisors is an integer number (32161374990).

Almost surely, 2^400230444040 is an apocalyptic number.

400230444040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400230444040 is an abundant number, since it is smaller than the sum of its proper divisors (628933555640).

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

400230444040 is a wasteful number, since it uses less digits than its factorization.

400230444040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429394461 (or 1429394457 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 400230444040 its reverse (40444032004), we get a palindrome (440674476044).

The spelling of 400230444040 in words is "four hundred billion, two hundred thirty million, four hundred forty-four thousand, forty".