401098191 has 16 divisors (see below), whose sum is σ = 576298464. Its totient is φ = 246674304.

The previous prime is 401098177. The next prime is 401098193. The reversal of 401098191 is 191890104.

It is not a de Polignac number, because 401098191 - 2²¹ = 399001039 is a prime.

It is a super-3 number, since 3×401098191³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401098193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107245 + ... + 110921.

It is an arithmetic number, because the mean of its divisors is an integer number (36018654).

Almost surely, 2^401098191 is an apocalyptic number.

401098191 is a deficient number, since it is larger than the sum of its proper divisors (175200273).

401098191 is a wasteful number, since it uses less digits than its factorization.

401098191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6490.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 401098191 is about 20027.4359567070. The cubic root of 401098191 is about 737.4799786195.

It can be divided in two parts, 4010 and 98191, that added together give a palindrome (102201).

The spelling of 401098191 in words is "four hundred one million, ninety-eight thousand, one hundred ninety-one".