84354397 has 2 divisors, whose sum is σ = 84354398. Its totient is φ = 84354396.

The previous prime is 84354371. The next prime is 84354419. The reversal of 84354397 is 79345348.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80748196 + 3606201 = 8986^2 + 1899^2 .

It is a cyclic number.

It is not a de Polignac number, because 84354397 - 2⁷ = 84354269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84354307) 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, 42177198 + 42177199.

It is an arithmetic number, because the mean of its divisors is an integer number (42177199).

Almost surely, 2^84354397 is an apocalyptic number.

It is an amenable number.

84354397 is a deficient number, since it is larger than the sum of its proper divisors (1).

84354397 is an equidigital number, since it uses as much as digits as its factorization.

84354397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 43.

The square root of 84354397 is about 9184.4649816960. The cubic root of 84354397 is about 438.5669579517.

The spelling of 84354397 in words is "eighty-four million, three hundred fifty-four thousand, three hundred ninety-seven".