84811940 has 12 divisors (see below), whose sum is σ = 178105116. Its totient is φ = 33924768.

The previous prime is 84811933. The next prime is 84811943. The reversal of 84811940 is 4911848.

It can be written as a sum of positive squares in 2 ways, for example, as 32741284 + 52070656 = 5722^2 + 7216^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 84811940.

It is not an unprimeable number, because it can be changed into a prime (84811943) 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, 2120279 + ... + 2120318.

It is an arithmetic number, because the mean of its divisors is an integer number (14842093).

Almost surely, 2^84811940 is an apocalyptic number.

It is an amenable number.

84811940 is an abundant number, since it is smaller than the sum of its proper divisors (93293176).

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

84811940 is a wasteful number, since it uses less digits than its factorization.

84811940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4240606 (or 4240604 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 84811940 is about 9209.3398243305. The cubic root of 84811940 is about 439.3584659038.

The spelling of 84811940 in words is "eighty-four million, eight hundred eleven thousand, nine hundred forty".