87980833 has 2 divisors, whose sum is σ = 87980834. Its totient is φ = 87980832.

The previous prime is 87980803. The next prime is 87980839. The reversal of 87980833 is 33808978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56430144 + 31550689 = 7512^2 + 5617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87980833 is a prime.

It is not a weakly prime, because it can be changed into another prime (87980839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43990416 + 43990417.

It is an arithmetic number, because the mean of its divisors is an integer number (43990417).

Almost surely, 2^87980833 is an apocalyptic number.

It is an amenable number.

87980833 is a deficient number, since it is larger than the sum of its proper divisors (1).

87980833 is an equidigital number, since it uses as much as digits as its factorization.

87980833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 87980833 is about 9379.8098594801. The cubic root of 87980833 is about 444.7637225672.

The spelling of 87980833 in words is "eighty-seven million, nine hundred eighty thousand, eight hundred thirty-three".