400120004434 has 8 divisors (see below), whose sum is σ = 600185150460. Its totient is φ = 200058287616.

The previous prime is 400120004387. The next prime is 400120004447. The reversal of 400120004434 is 434400021004.

It can be written as a sum of positive squares in 2 ways, for example, as 340874984025 + 59245020409 = 583845^2 + 243403^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 542479 + ... + 1046194.

Almost surely, 2^400120004434 is an apocalyptic number.

400120004434 is a deficient number, since it is larger than the sum of its proper divisors (200065146026).

400120004434 is a wasteful number, since it uses less digits than its factorization.

400120004434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714604.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 400120004434 its reverse (434400021004), we get a palindrome (834520025438).

The spelling of 400120004434 in words is "four hundred billion, one hundred twenty million, four thousand, four hundred thirty-four".