6139191 has 4 divisors (see below), whose sum is σ = 8185592. Its totient is φ = 4092792.

The previous prime is 6139141. The next prime is 6139201. The reversal of 6139191 is 1919316.

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

It is not a de Polignac number, because 6139191 - 2¹⁵ = 6106423 is a prime.

It is a super-2 number, since 2×6139191² = 75379332268962, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6139121) 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, 1023196 + ... + 1023201.

It is an arithmetic number, because the mean of its divisors is an integer number (2046398).

Almost surely, 2^6139191 is an apocalyptic number.

6139191 is a deficient number, since it is larger than the sum of its proper divisors (2046401).

6139191 is a wasteful number, since it uses less digits than its factorization.

6139191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046400.

The product of its digits is 1458, while the sum is 30.

The square root of 6139191 is about 2477.7390903806. The cubic root of 6139191 is about 183.1064804780.

The spelling of 6139191 in words is "six million, one hundred thirty-nine thousand, one hundred ninety-one".