84970191 has 4 divisors (see below), whose sum is σ = 113293592. Its totient is φ = 56646792.

The previous prime is 84970141. The next prime is 84970213. The reversal of 84970191 is 19107948.

It is a happy number.

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

It is not a de Polignac number, because 84970191 - 2⁹ = 84969679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84970141) 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, 14161696 + ... + 14161701.

It is an arithmetic number, because the mean of its divisors is an integer number (28323398).

Almost surely, 2^84970191 is an apocalyptic number.

84970191 is a deficient number, since it is larger than the sum of its proper divisors (28323401).

84970191 is a wasteful number, since it uses less digits than its factorization.

84970191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28323400.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 84970191 is about 9217.9276955290. The cubic root of 84970191 is about 439.6315631296.

The spelling of 84970191 in words is "eighty-four million, nine hundred seventy thousand, one hundred ninety-one".