400244404441 has 4 divisors (see below), whose sum is σ = 457422176512. Its totient is φ = 343066632372.

The previous prime is 400244404403. The next prime is 400244404457. The reversal of 400244404441 is 144404442004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400244404441 - 2¹³ = 400244396249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400244404841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28588886025 + ... + 28588886038.

It is an arithmetic number, because the mean of its divisors is an integer number (114355544128).

Almost surely, 2^400244404441 is an apocalyptic number.

It is an amenable number.

400244404441 is a deficient number, since it is larger than the sum of its proper divisors (57177772071).

400244404441 is an equidigital number, since it uses as much as digits as its factorization.

400244404441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57177772070.

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 400244404441 its reverse (144404442004), we get a palindrome (544648846445).

The spelling of 400244404441 in words is "four hundred billion, two hundred forty-four million, four hundred four thousand, four hundred forty-one".