87283439 has 2 divisors, whose sum is σ = 87283440. Its totient is φ = 87283438.

The previous prime is 87283393. The next prime is 87283447. The reversal of 87283439 is 93438278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87283439 - 2¹⁶ = 87217903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87283439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87283489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43641719 + 43641720.

It is an arithmetic number, because the mean of its divisors is an integer number (43641720).

Almost surely, 2^87283439 is an apocalyptic number.

87283439 is a deficient number, since it is larger than the sum of its proper divisors (1).

87283439 is an equidigital number, since it uses as much as digits as its factorization.

87283439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 87283439 is about 9342.5606232981. The cubic root of 87283439 is about 443.5854404307.

It can be divided in two parts, 8728 and 3439, that added together give a cube (12167 = 23³).

The spelling of 87283439 in words is "eighty-seven million, two hundred eighty-three thousand, four hundred thirty-nine".