401410191 has 32 divisors (see below), whose sum is σ = 687375360. Its totient is φ = 202523904.

The previous prime is 401410189. The next prime is 401410231. The reversal of 401410191 is 191014104.

It is not a de Polignac number, because 401410191 - 2¹ = 401410189 is a prime.

It is a super-2 number, since 2×401410191² = 322260282877312962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401410091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25686 + ... + 38243.

It is an arithmetic number, because the mean of its divisors is an integer number (21480480).

Almost surely, 2^401410191 is an apocalyptic number.

401410191 is a deficient number, since it is larger than the sum of its proper divisors (285965169).

401410191 is a wasteful number, since it uses less digits than its factorization.

401410191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63975.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 401410191 is about 20035.2237571733. The cubic root of 401410191 is about 737.6711488647.

Adding to 401410191 its reverse (191014104), we get a palindrome (592424295).

The spelling of 401410191 in words is "four hundred one million, four hundred ten thousand, one hundred ninety-one".