87030439 has 2 divisors, whose sum is σ = 87030440. Its totient is φ = 87030438.

The previous prime is 87030407. The next prime is 87030443. The reversal of 87030439 is 93403078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87030439 - 2⁵ = 87030407 is a prime.

It is equal to p_5054884 and since 87030439 and 5054884 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87030739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43515219 + 43515220.

It is an arithmetic number, because the mean of its divisors is an integer number (43515220).

Almost surely, 2^87030439 is an apocalyptic number.

87030439 is a deficient number, since it is larger than the sum of its proper divisors (1).

87030439 is an equidigital number, since it uses as much as digits as its factorization.

87030439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 87030439 is about 9329.0106120639. The cubic root of 87030439 is about 443.1564330244.

The spelling of 87030439 in words is "eighty-seven million, thirty thousand, four hundred thirty-nine".