84974881 has 2 divisors, whose sum is σ = 84974882. Its totient is φ = 84974880.

The previous prime is 84974863. The next prime is 84974909. The reversal of 84974881 is 18847948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74995600 + 9979281 = 8660^2 + 3159^2 .

It is a cyclic number.

It is not a de Polignac number, because 84974881 - 2⁹ = 84974369 is a prime.

It is a super-2 number, since 2×84974881² = 14441460801928322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84974831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42487440 + 42487441.

It is an arithmetic number, because the mean of its divisors is an integer number (42487441).

Almost surely, 2^84974881 is an apocalyptic number.

It is an amenable number.

84974881 is a deficient number, since it is larger than the sum of its proper divisors (1).

84974881 is an equidigital number, since it uses as much as digits as its factorization.

84974881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 49.

The square root of 84974881 is about 9218.1820875919. The cubic root of 84974881 is about 439.6396515901.

The spelling of 84974881 in words is "eighty-four million, nine hundred seventy-four thousand, eight hundred eighty-one".