400244011 has 6 divisors (see below), whose sum is σ = 405131300. Its totient is φ = 395414988.

The previous prime is 400243981. The next prime is 400244021. The reversal of 400244011 is 110442004.

It is a de Polignac number, because none of the positive numbers 2^k-400244011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400244021) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 22161 + ... + 35938.

Almost surely, 2^400244011 is an apocalyptic number.

400244011 is a deficient number, since it is larger than the sum of its proper divisors (4887289).

400244011 is an frugal number, since it uses more digits than its factorization.

400244011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58265 (or 58182 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 400244011 is about 20006.0993449498. The cubic root of 400244011 is about 736.9560933078.

Adding to 400244011 its reverse (110442004), we get a palindrome (510686015).

The spelling of 400244011 in words is "four hundred million, two hundred forty-four thousand, eleven".