401067909 has 32 divisors (see below), whose sum is σ = 655516800. Its totient is φ = 240324480.

The previous prime is 401067881. The next prime is 401067977. The reversal of 401067909 is 909760104.

It is a de Polignac number, because none of the positive numbers 2^k-401067909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401067109) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 18847 + ... + 34019.

It is an arithmetic number, because the mean of its divisors is an integer number (20484900).

Almost surely, 2^401067909 is an apocalyptic number.

It is an amenable number.

401067909 is a deficient number, since it is larger than the sum of its proper divisors (254448891).

401067909 is a wasteful number, since it uses less digits than its factorization.

401067909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15282 (or 15276 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 401067909 is about 20026.6799295340. The cubic root of 401067909 is about 737.4614187995.

The spelling of 401067909 in words is "four hundred one million, sixty-seven thousand, nine hundred nine".