87082739 has 2 divisors, whose sum is σ = 87082740. Its totient is φ = 87082738.

The previous prime is 87082717. The next prime is 87082759. The reversal of 87082739 is 93728078.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87082739 - 2²⁰ = 86034163 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87082739.

It is not a weakly prime, because it can be changed into another prime (87082759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43541369 + 43541370.

It is an arithmetic number, because the mean of its divisors is an integer number (43541370).

Almost surely, 2^87082739 is an apocalyptic number.

87082739 is a deficient number, since it is larger than the sum of its proper divisors (1).

87082739 is an equidigital number, since it uses as much as digits as its factorization.

87082739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 87082739 is about 9331.8132750286. The cubic root of 87082739 is about 443.2451852686.

The spelling of 87082739 in words is "eighty-seven million, eighty-two thousand, seven hundred thirty-nine".