400002441 has 4 divisors (see below), whose sum is σ = 533336592. Its totient is φ = 266668292.

The previous prime is 400002433. The next prime is 400002443. The reversal of 400002441 is 144200004.

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 400002441 - 2³ = 400002433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400002441.

It is not an unprimeable number, because it can be changed into a prime (400002443) 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, 66667071 + ... + 66667076.

It is an arithmetic number, because the mean of its divisors is an integer number (133334148).

Almost surely, 2^400002441 is an apocalyptic number.

It is an amenable number.

400002441 is a deficient number, since it is larger than the sum of its proper divisors (133334151).

400002441 is a wasteful number, since it uses less digits than its factorization.

400002441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133334150.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 400002441 is about 20000.0610249069. The cubic root of 400002441 is about 736.8077985118.

Adding to 400002441 its reverse (144200004), we get a palindrome (544202445).

The spelling of 400002441 in words is "four hundred million, two thousand, four hundred forty-one".