87959849 has 2 divisors, whose sum is σ = 87959850. Its totient is φ = 87959848.

The previous prime is 87959779. The next prime is 87959863. The reversal of 87959849 is 94895978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86118400 + 1841449 = 9280^2 + 1357^2 .

It is a cyclic number.

It is not a de Polignac number, because 87959849 - 2⁸ = 87959593 is a prime.

It is a super-2 number, since 2×87959849² = 15473870072205602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87959869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43979924 + 43979925.

It is an arithmetic number, because the mean of its divisors is an integer number (43979925).

Almost surely, 2^87959849 is an apocalyptic number.

It is an amenable number.

87959849 is a deficient number, since it is larger than the sum of its proper divisors (1).

87959849 is an equidigital number, since it uses as much as digits as its factorization.

87959849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 59.

The square root of 87959849 is about 9378.6912199944. The cubic root of 87959849 is about 444.7283600770.

The spelling of 87959849 in words is "eighty-seven million, nine hundred fifty-nine thousand, eight hundred forty-nine".