400064426 has 8 divisors (see below), whose sum is σ = 603112800. Its totient is φ = 199026828.

The previous prime is 400064419. The next prime is 400064449. The reversal of 400064426 is 624460004.

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

It is a junction number, because it is equal to n+sod(n) for n = 400064395 and 400064404.

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, 502196 + ... + 502991.

It is an arithmetic number, because the mean of its divisors is an integer number (75389100).

Almost surely, 2^400064426 is an apocalyptic number.

400064426 is a deficient number, since it is larger than the sum of its proper divisors (203048374).

400064426 is a wasteful number, since it uses less digits than its factorization.

400064426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005388.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 400064426 is about 20001.6105851504. The cubic root of 400064426 is about 736.8458555067.

The spelling of 400064426 in words is "four hundred million, sixty-four thousand, four hundred twenty-six".