401564834 has 16 divisors (see below), whose sum is σ = 661521600. Its totient is φ = 181302960.

The previous prime is 401564833. The next prime is 401564857. The reversal of 401564834 is 438465104.

It is a super-2 number, since 2×401564834² = 322508631810895112, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 401564794 and 401564803.

It is not an unprimeable number, because it can be changed into a prime (401564833) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 57974 + ... + 64529.

It is an arithmetic number, because the mean of its divisors is an integer number (41345100).

Almost surely, 2^401564834 is an apocalyptic number.

401564834 is a deficient number, since it is larger than the sum of its proper divisors (259956766).

401564834 is a wasteful number, since it uses less digits than its factorization.

401564834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122665.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 401564834 is about 20039.0826636351. The cubic root of 401564834 is about 737.7658658035.

The spelling of 401564834 in words is "four hundred one million, five hundred sixty-four thousand, eight hundred thirty-four".