400406674 has 8 divisors (see below), whose sum is σ = 616842828. Its totient is φ = 194792400.

The previous prime is 400406663. The next prime is 400406687. The reversal of 400406674 is 476604004.

It can be written as a sum of positive squares in 2 ways, for example, as 269189649 + 131217025 = 16407^2 + 11455^2 .

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2705377 + ... + 2705524.

Almost surely, 2^400406674 is an apocalyptic number.

400406674 is a deficient number, since it is larger than the sum of its proper divisors (216436154).

400406674 is a wasteful number, since it uses less digits than its factorization.

400406674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5410940.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 400406674 is about 20010.1642671918. The cubic root of 400406674 is about 737.0559151247.

The spelling of 400406674 in words is "four hundred million, four hundred six thousand, six hundred seventy-four".