84521964 has 24 divisors (see below), whose sum is σ = 205793280. Its totient is φ = 26948944.

The previous prime is 84521963. The next prime is 84521981. The reversal of 84521964 is 46912548.

It is not an unprimeable number, because it can be changed into a prime (84521963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152844 + ... + 153395.

It is an arithmetic number, because the mean of its divisors is an integer number (8574720).

Almost surely, 2^84521964 is an apocalyptic number.

It is an amenable number.

84521964 is an abundant number, since it is smaller than the sum of its proper divisors (121271316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84521964 is a wasteful number, since it uses less digits than its factorization.

84521964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306269 (or 306267 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 84521964 is about 9193.5827619052. The cubic root of 84521964 is about 438.8571650793.

The spelling of 84521964 in words is "eighty-four million, five hundred twenty-one thousand, nine hundred sixty-four".