87039853 has 2 divisors, whose sum is σ = 87039854. Its totient is φ = 87039852.

The previous prime is 87039829. The next prime is 87039913. The reversal of 87039853 is 35893078.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52969284 + 34070569 = 7278^2 + 5837^2 .

It is a cyclic number.

It is not a de Polignac number, because 87039853 - 2⁹ = 87039341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87039053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43519926 + 43519927.

It is an arithmetic number, because the mean of its divisors is an integer number (43519927).

Almost surely, 2^87039853 is an apocalyptic number.

It is an amenable number.

87039853 is a deficient number, since it is larger than the sum of its proper divisors (1).

87039853 is an equidigital number, since it uses as much as digits as its factorization.

87039853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 87039853 is about 9329.5151535329. The cubic root of 87039853 is about 443.1724110519.

The spelling of 87039853 in words is "eighty-seven million, thirty-nine thousand, eight hundred fifty-three".