84630309 has 4 divisors (see below), whose sum is σ = 112840416. Its totient is φ = 56420204.

The previous prime is 84630281. The next prime is 84630311. The reversal of 84630309 is 90303648.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84630309 - 2¹³ = 84622117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84630309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84630349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14105049 + ... + 14105054.

It is an arithmetic number, because the mean of its divisors is an integer number (28210104).

Almost surely, 2^84630309 is an apocalyptic number.

It is an amenable number.

84630309 is a deficient number, since it is larger than the sum of its proper divisors (28210107).

84630309 is a wasteful number, since it uses less digits than its factorization.

84630309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28210106.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 84630309 is about 9199.4733001406. The cubic root of 84630309 is about 439.0446022660.

The spelling of 84630309 in words is "eighty-four million, six hundred thirty thousand, three hundred nine".