400424440202 has 8 divisors (see below), whose sum is σ = 601974382500. Its totient is φ = 199766312704.

The previous prime is 400424440183. The next prime is 400424440211. The reversal of 400424440202 is 202044424004.

It can be written as a sum of positive squares in 2 ways, for example, as 357748730641 + 42675709561 = 598121^2 + 206581^2 .

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

It is a super-2 number, since 2×400424440202² (a number of 24 digits) contains 22 as substring.

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, 222952577 + ... + 222954372.

Almost surely, 2^400424440202 is an apocalyptic number.

400424440202 is a deficient number, since it is larger than the sum of its proper divisors (201549942298).

400424440202 is a wasteful number, since it uses less digits than its factorization.

400424440202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445907400.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 400424440202 its reverse (202044424004), we get a palindrome (602468864206).

The spelling of 400424440202 in words is "four hundred billion, four hundred twenty-four million, four hundred forty thousand, two hundred two".