84759139 has 2 divisors, whose sum is σ = 84759140. Its totient is φ = 84759138.

The previous prime is 84759131. The next prime is 84759203. The reversal of 84759139 is 93195748.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84759139 - 2³ = 84759131 is a prime.

It is a super-2 number, since 2×84759139² = 14368223288042642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84759131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42379569 + 42379570.

It is an arithmetic number, because the mean of its divisors is an integer number (42379570).

Almost surely, 2^84759139 is an apocalyptic number.

84759139 is a deficient number, since it is larger than the sum of its proper divisors (1).

84759139 is an equidigital number, since it uses as much as digits as its factorization.

84759139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 84759139 is about 9206.4726687261. The cubic root of 84759139 is about 439.2672704808.

The spelling of 84759139 in words is "eighty-four million, seven hundred fifty-nine thousand, one hundred thirty-nine".