400433952 has 24 divisors (see below), whose sum is σ = 1051139376. Its totient is φ = 133477952.

The previous prime is 400433947. The next prime is 400434007. The reversal of 400433952 is 259334004.

It is a tau number, because it is divible by the number of its divisors (24).

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, 2085498 + ... + 2085689.

It is an arithmetic number, because the mean of its divisors is an integer number (43797474).

Almost surely, 2^400433952 is an apocalyptic number.

It is an amenable number.

400433952 is an abundant number, since it is smaller than the sum of its proper divisors (650705424).

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

400433952 is a wasteful number, since it uses less digits than its factorization.

400433952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171200 (or 4171192 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 400433952 is about 20010.8458591835. The cubic root of 400433952 is about 737.0726522373.

Adding to 400433952 its reverse (259334004), we get a palindrome (659767956).

The spelling of 400433952 in words is "four hundred million, four hundred thirty-three thousand, nine hundred fifty-two".