84397399 has 2 divisors, whose sum is σ = 84397400. Its totient is φ = 84397398.

The previous prime is 84397363. The next prime is 84397409. The reversal of 84397399 is 99379348.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84397399 - 2²³ = 76008791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84397309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42198699 + 42198700.

It is an arithmetic number, because the mean of its divisors is an integer number (42198700).

Almost surely, 2^84397399 is an apocalyptic number.

84397399 is a deficient number, since it is larger than the sum of its proper divisors (1).

84397399 is an equidigital number, since it uses as much as digits as its factorization.

84397399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 52.

The square root of 84397399 is about 9186.8057016571. The cubic root of 84397399 is about 438.6414691933.

The spelling of 84397399 in words is "eighty-four million, three hundred ninety-seven thousand, three hundred ninety-nine".