84397239 has 6 divisors (see below), whose sum is σ = 121907136. Its totient is φ = 56264820.

The previous prime is 84397237. The next prime is 84397241. The reversal of 84397239 is 93279348.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (84397237) and next prime (84397241).

It is not a de Polignac number, because 84397239 - 2¹ = 84397237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84397194 and 84397203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84397237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4688727 + ... + 4688744.

It is an arithmetic number, because the mean of its divisors is an integer number (20317856).

Almost surely, 2^84397239 is an apocalyptic number.

84397239 is a deficient number, since it is larger than the sum of its proper divisors (37509897).

84397239 is a wasteful number, since it uses less digits than its factorization.

84397239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9377477 (or 9377474 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 84397239 is about 9186.7969935119. The cubic root of 84397239 is about 438.6411920020.

The spelling of 84397239 in words is "eighty-four million, three hundred ninety-seven thousand, two hundred thirty-nine".