400020003434 has 16 divisors (see below), whose sum is σ = 601066849536. Its totient is φ = 199664665200.

The previous prime is 400020003419. The next prime is 400020003521. The reversal of 400020003434 is 434300020004.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2859644 + ... + 2996264.

It is an arithmetic number, because the mean of its divisors is an integer number (37566678096).

Almost surely, 2^400020003434 is an apocalyptic number.

400020003434 is a deficient number, since it is larger than the sum of its proper divisors (201046846102).

400020003434 is a wasteful number, since it uses less digits than its factorization.

400020003434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139141.

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 400020003434 its reverse (434300020004), we get a palindrome (834320023438).

The spelling of 400020003434 in words is "four hundred billion, twenty million, three thousand, four hundred thirty-four".