84090536 has 8 divisors (see below), whose sum is σ = 157669770. Its totient is φ = 42045264.

The previous prime is 84090533. The next prime is 84090571. The reversal of 84090536 is 63509048.

It can be written as a sum of positive squares in only one way, i.e., 81180100 + 2910436 = 9010^2 + 1706^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 84090496 and 84090505.

It is not an unprimeable number, because it can be changed into a prime (84090533) 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 as a sum of consecutive naturals, namely, 5255651 + ... + 5255666.

Almost surely, 2^84090536 is an apocalyptic number.

It is an amenable number.

84090536 is a deficient number, since it is larger than the sum of its proper divisors (73579234).

84090536 is a wasteful number, since it uses less digits than its factorization.

84090536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10511323 (or 10511319 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 84090536 is about 9170.0892034920. The cubic root of 84090536 is about 438.1092004087.

The spelling of 84090536 in words is "eighty-four million, ninety thousand, five hundred thirty-six".