8401191 has 4 divisors (see below), whose sum is σ = 11201592. Its totient is φ = 5600792.

The previous prime is 8401157. The next prime is 8401193. The reversal of 8401191 is 1911048.

8401191 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8401191 - 2¹⁰ = 8400167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8401193) 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, 1400196 + ... + 1400201.

It is an arithmetic number, because the mean of its divisors is an integer number (2800398).

Almost surely, 2^8401191 is an apocalyptic number.

8401191 is a deficient number, since it is larger than the sum of its proper divisors (2800401).

8401191 is a wasteful number, since it uses less digits than its factorization.

8401191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800400.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 8401191 is about 2898.4808089756. The cubic root of 8401191 is about 203.2888782745.

The spelling of 8401191 in words is "eight million, four hundred one thousand, one hundred ninety-one".