84971949 has 8 divisors (see below), whose sum is σ = 114569280. Its totient is φ = 56011296.

The previous prime is 84971947. The next prime is 84972029. The reversal of 84971949 is 94917948.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84971949 - 2¹ = 84971947 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84971947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158857 + ... + 159390.

It is an arithmetic number, because the mean of its divisors is an integer number (14321160).

Almost surely, 2^84971949 is an apocalyptic number.

84971949 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

84971949 is a deficient number, since it is larger than the sum of its proper divisors (29597331).

84971949 is a wasteful number, since it uses less digits than its factorization.

84971949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318339.

The product of its digits is 653184, while the sum is 51.

The square root of 84971949 is about 9218.0230526941. The cubic root of 84971949 is about 439.6345950437.

The spelling of 84971949 in words is "eighty-four million, nine hundred seventy-one thousand, nine hundred forty-nine".