400333552 has 20 divisors (see below), whose sum is σ = 776156920. Its totient is φ = 200035008.

The previous prime is 400333547. The next prime is 400333559. The reversal of 400333552 is 255333004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400333559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19699 + ... + 34477.

It is an arithmetic number, because the mean of its divisors is an integer number (38807846).

Almost surely, 2^400333552 is an apocalyptic number.

It is an amenable number.

400333552 is a deficient number, since it is larger than the sum of its proper divisors (375823368).

400333552 is a wasteful number, since it uses less digits than its factorization.

400333552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16480 (or 16474 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 400333552 is about 20008.3370623348. The cubic root of 400333552 is about 737.0110455066.

Adding to 400333552 its reverse (255333004), we get a palindrome (655666556).

The spelling of 400333552 in words is "four hundred million, three hundred thirty-three thousand, five hundred fifty-two".