400200400402 has 32 divisors (see below), whose sum is σ = 661743546048. Its totient is φ = 180003000000.

The previous prime is 400200400399. The next prime is 400200400421. The reversal of 400200400402 is 204004002004.

It is a super-2 number, since 2×400200400402² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3816777 + ... + 3920227.

It is an arithmetic number, because the mean of its divisors is an integer number (20679485814).

Almost surely, 2^400200400402 is an apocalyptic number.

400200400402 is a deficient number, since it is larger than the sum of its proper divisors (261543145646).

400200400402 is a wasteful number, since it uses less digits than its factorization.

400200400402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105306.

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 400200400402 its reverse (204004002004), we get a palindrome (604204402406).

The spelling of 400200400402 in words is "four hundred billion, two hundred million, four hundred thousand, four hundred two".