84089039 has 2 divisors, whose sum is σ = 84089040. Its totient is φ = 84089038.

The previous prime is 84088999. The next prime is 84089099. The reversal of 84089039 is 93098048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84089039 - 2¹² = 84084943 is a prime.

It is a Chen prime.

It is equal to p_4893944 and since 84089039 and 4893944 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 84088987 and 84089005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84089099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42044519 + 42044520.

It is an arithmetic number, because the mean of its divisors is an integer number (42044520).

Almost surely, 2^84089039 is an apocalyptic number.

84089039 is a deficient number, since it is larger than the sum of its proper divisors (1).

84089039 is an equidigital number, since it uses as much as digits as its factorization.

84089039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 84089039 is about 9170.0075790590. The cubic root of 84089039 is about 438.1066006180.

Subtracting 84089039 from its reverse (93098048), we obtain a palindrome (9009009).

The spelling of 84089039 in words is "eighty-four million, eighty-nine thousand, thirty-nine".