400705374646 has 8 divisors (see below), whose sum is σ = 601286348664. Its totient is φ = 200276591760.

The previous prime is 400705374617. The next prime is 400705374673. The reversal of 400705374646 is 646473507004.

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

It is a super-3 number, since 3×400705374646³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400705374596 and 400705374605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38041200 + ... + 38051731.

It is an arithmetic number, because the mean of its divisors is an integer number (75160793583).

Almost surely, 2^400705374646 is an apocalyptic number.

400705374646 is a deficient number, since it is larger than the sum of its proper divisors (200580974018).

400705374646 is a wasteful number, since it uses less digits than its factorization.

400705374646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76095566.

The product of its (nonzero) digits is 1693440, while the sum is 46.

The spelling of 400705374646 in words is "four hundred billion, seven hundred five million, three hundred seventy-four thousand, six hundred forty-six".