400806271 has 8 divisors (see below), whose sum is σ = 413164800. Its totient is φ = 388607448.

The previous prime is 400806247. The next prime is 400806277. The reversal of 400806271 is 172608004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400806271 - 2¹⁷ = 400675199 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 (400806277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34821 + ... + 44878.

It is an arithmetic number, because the mean of its divisors is an integer number (51645600).

Almost surely, 2^400806271 is an apocalyptic number.

400806271 is a deficient number, since it is larger than the sum of its proper divisors (12358529).

400806271 is a wasteful number, since it uses less digits than its factorization.

400806271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79853.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 400806271 is about 20020.1466278347. The cubic root of 400806271 is about 737.3010221033.

The spelling of 400806271 in words is "four hundred million, eight hundred six thousand, two hundred seventy-one".