400053211 has 4 divisors (see below), whose sum is σ = 400495192. Its totient is φ = 399611232.

The previous prime is 400053193. The next prime is 400053221. The reversal of 400053211 is 112350004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400053211 - 2¹¹ = 400051163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400053221) 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, 219630 + ... + 221443.

It is an arithmetic number, because the mean of its divisors is an integer number (100123798).

Almost surely, 2^400053211 is an apocalyptic number.

400053211 is a deficient number, since it is larger than the sum of its proper divisors (441981).

400053211 is an equidigital number, since it uses as much as digits as its factorization.

400053211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441980.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 400053211 is about 20001.3302307622. The cubic root of 400053211 is about 736.8389701128.

The spelling of 400053211 in words is "four hundred million, fifty-three thousand, two hundred eleven".