84820907 has 2 divisors, whose sum is σ = 84820908. Its totient is φ = 84820906.

The previous prime is 84820903. The next prime is 84820961. The reversal of 84820907 is 70902848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84820907 - 2² = 84820903 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84820903) 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 as a sum of consecutive naturals, namely, 42410453 + 42410454.

It is an arithmetic number, because the mean of its divisors is an integer number (42410454).

Almost surely, 2^84820907 is an apocalyptic number.

84820907 is a deficient number, since it is larger than the sum of its proper divisors (1).

84820907 is an equidigital number, since it uses as much as digits as its factorization.

84820907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 84820907 is about 9209.8266541776. The cubic root of 84820907 is about 439.3739495276.

The spelling of 84820907 in words is "eighty-four million, eight hundred twenty thousand, nine hundred seven".