84934840 has 32 divisors (see below), whose sum is σ = 191782080. Its totient is φ = 33853312.

The previous prime is 84934799. The next prime is 84934841. The reversal of 84934840 is 4843948.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 84934793 and 84934802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84934841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8097 + ... + 15343.

It is an arithmetic number, because the mean of its divisors is an integer number (5993190).

Almost surely, 2^84934840 is an apocalyptic number.

It is an amenable number.

84934840 is an abundant number, since it is smaller than the sum of its proper divisors (106847240).

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

84934840 is a wasteful number, since it uses less digits than its factorization.

84934840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7551 (or 7547 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 84934840 is about 9216.0099826335. The cubic root of 84934840 is about 439.5705865644.

The spelling of 84934840 in words is "eighty-four million, nine hundred thirty-four thousand, eight hundred forty".