84197772 has 24 divisors (see below), whose sum is σ = 218290800. Its totient is φ = 28065888.

The previous prime is 84197749. The next prime is 84197783. The reversal of 84197772 is 27779148.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389697 + ... + 389912.

It is an arithmetic number, because the mean of its divisors is an integer number (9095450).

Almost surely, 2^84197772 is an apocalyptic number.

It is an amenable number.

84197772 is an abundant number, since it is smaller than the sum of its proper divisors (134093028).

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

84197772 is a wasteful number, since it uses less digits than its factorization.

84197772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779622 (or 779614 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 84197772 is about 9175.9343938370. The cubic root of 84197772 is about 438.2953534282.

The spelling of 84197772 in words is "eighty-four million, one hundred ninety-seven thousand, seven hundred seventy-two".