400533745 has 8 divisors (see below), whose sum is σ = 480864384. Its totient is φ = 320277744.

The previous prime is 400533701. The next prime is 400533751. The reversal of 400533745 is 547335004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400533745 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6079 + ... + 28948.

It is an arithmetic number, because the mean of its divisors is an integer number (60108048).

Almost surely, 2^400533745 is an apocalyptic number.

It is an amenable number.

400533745 is a deficient number, since it is larger than the sum of its proper divisors (80330639).

400533745 is a wasteful number, since it uses less digits than its factorization.

400533745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37319.

The product of its (nonzero) digits is 25200, while the sum is 31.

The square root of 400533745 is about 20013.3391766592. The cubic root of 400533745 is about 737.1338763013.

Adding to 400533745 its reverse (547335004), we get a palindrome (947868749).

The spelling of 400533745 in words is "four hundred million, five hundred thirty-three thousand, seven hundred forty-five".