84722401 has 2 divisors, whose sum is σ = 84722402. Its totient is φ = 84722400.

The previous prime is 84722377. The next prime is 84722431. The reversal of 84722401 is 10422748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76108176 + 8614225 = 8724^2 + 2935^2 .

It is a cyclic number.

It is not a de Polignac number, because 84722401 - 2¹³ = 84714209 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84722401.

It is not a weakly prime, because it can be changed into another prime (84722431) 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, 42361200 + 42361201.

It is an arithmetic number, because the mean of its divisors is an integer number (42361201).

Almost surely, 2^84722401 is an apocalyptic number.

It is an amenable number.

84722401 is a deficient number, since it is larger than the sum of its proper divisors (1).

84722401 is an equidigital number, since it uses as much as digits as its factorization.

84722401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 84722401 is about 9204.4772257853. The cubic root of 84722401 is about 439.2037959759.

The spelling of 84722401 in words is "eighty-four million, seven hundred twenty-two thousand, four hundred one".