34872191 has 2 divisors, whose sum is σ = 34872192. Its totient is φ = 34872190.

The previous prime is 34872161. The next prime is 34872193. The reversal of 34872191 is 19127843.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 34872191 - 2¹⁸ = 34610047 is a prime.

Together with 34872193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34872193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17436095 + 17436096.

It is an arithmetic number, because the mean of its divisors is an integer number (17436096).

Almost surely, 2^34872191 is an apocalyptic number.

34872191 is a deficient number, since it is larger than the sum of its proper divisors (1).

34872191 is an equidigital number, since it uses as much as digits as its factorization.

34872191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 34872191 is about 5905.2680718152. The cubic root of 34872191 is about 326.7079818400.

The spelling of 34872191 in words is "thirty-four million, eight hundred seventy-two thousand, one hundred ninety-one".