401000109 has 4 divisors (see below), whose sum is σ = 534666816. Its totient is φ = 267333404.

The previous prime is 401000071. The next prime is 401000113. The reversal of 401000109 is 901000104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401000109 - 2⁸ = 400999853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401000309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66833349 + ... + 66833354.

It is an arithmetic number, because the mean of its divisors is an integer number (133666704).

Almost surely, 2^401000109 is an apocalyptic number.

It is an amenable number.

401000109 is a deficient number, since it is larger than the sum of its proper divisors (133666707).

401000109 is a wasteful number, since it uses less digits than its factorization.

401000109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133666706.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 401000109 is about 20024.9871161007. The cubic root of 401000109 is about 737.4198608315.

The spelling of 401000109 in words is "four hundred one million, one hundred nine", and thus it is an aban number.