400544834 has 8 divisors (see below), whose sum is σ = 601655040. Its totient is φ = 199993156.

The previous prime is 400544819. The next prime is 400544843. The reversal of 400544834 is 438445004.

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

It is a self number, because there is not a number n which added to its sum of digits gives 400544834.

It is an unprimeable number.

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, 137834 + ... + 140709.

It is an arithmetic number, because the mean of its divisors is an integer number (75206880).

Almost surely, 2^400544834 is an apocalyptic number.

400544834 is a deficient number, since it is larger than the sum of its proper divisors (201110206).

400544834 is a wasteful number, since it uses less digits than its factorization.

400544834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279264.

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 400544834 is about 20013.6162149672. The cubic root of 400544834 is about 737.1406788926.

Adding to 400544834 its reverse (438445004), we get a palindrome (838989838).

The spelling of 400544834 in words is "four hundred million, five hundred forty-four thousand, eight hundred thirty-four".