87270839 has 2 divisors, whose sum is σ = 87270840. Its totient is φ = 87270838.

The previous prime is 87270817. The next prime is 87270871. The reversal of 87270839 is 93807278.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87270839 - 2¹² = 87266743 is a 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 87270839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87272839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43635419 + 43635420.

It is an arithmetic number, because the mean of its divisors is an integer number (43635420).

Almost surely, 2^87270839 is an apocalyptic number.

87270839 is a deficient number, since it is larger than the sum of its proper divisors (1).

87270839 is an equidigital number, since it uses as much as digits as its factorization.

87270839 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 87270839 is about 9341.8862656318. The cubic root of 87270839 is about 443.5640944740.

The spelling of 87270839 in words is "eighty-seven million, two hundred seventy thousand, eight hundred thirty-nine".