84729090 has 16 divisors (see below), whose sum is σ = 203349888. Its totient is φ = 22594416.

The previous prime is 84729077. The next prime is 84729091. The reversal of 84729090 is 9092748.

It is not an unprimeable number, because it can be changed into a prime (84729091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1412122 + ... + 1412181.

It is an arithmetic number, because the mean of its divisors is an integer number (12709368).

Almost surely, 2^84729090 is an apocalyptic number.

84729090 is an abundant number, since it is smaller than the sum of its proper divisors (118620798).

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

84729090 is a wasteful number, since it uses less digits than its factorization.

84729090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824313.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 84729090 is about 9204.8405743935. The cubic root of 84729090 is about 439.2153543393.

The spelling of 84729090 in words is "eighty-four million, seven hundred twenty-nine thousand, ninety".