400444232 has 16 divisors (see below), whose sum is σ = 751161600. Its totient is φ = 200134480.

The previous prime is 400444223. The next prime is 400444241. The reversal of 400444232 is 232444004.

It is an interprime number because it is at equal distance from previous prime (400444223) and next prime (400444241).

It is a junction number, because it is equal to n+sod(n) for n = 400444198 and 400444207.

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, 11069 + ... + 30387.

It is an arithmetic number, because the mean of its divisors is an integer number (46947600).

Almost surely, 2^400444232 is an apocalyptic number.

It is an amenable number.

400444232 is a deficient number, since it is larger than the sum of its proper divisors (350717368).

400444232 is a wasteful number, since it uses less digits than its factorization.

400444232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21916 (or 21912 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 400444232 is about 20011.1027182412. The cubic root of 400444232 is about 737.0789595962.

Adding to 400444232 its reverse (232444004), we get a palindrome (632888236).

The spelling of 400444232 in words is "four hundred million, four hundred forty-four thousand, two hundred thirty-two".