401001047 has 4 divisors (see below), whose sum is σ = 401043120. Its totient is φ = 400958976.

The previous prime is 401001037. The next prime is 401001109. The reversal of 401001047 is 740100104.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 401001047 - 2⁶ = 401000983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401001037) 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, 854 + ... + 28332.

It is an arithmetic number, because the mean of its divisors is an integer number (100260780).

Almost surely, 2^401001047 is an apocalyptic number.

401001047 is a deficient number, since it is larger than the sum of its proper divisors (42073).

401001047 is a wasteful number, since it uses less digits than its factorization.

401001047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42072.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 401001047 is about 20025.0105368262. The cubic root of 401001047 is about 737.4204358100.

The spelling of 401001047 in words is "four hundred one million, one thousand, forty-seven".