87981359 has 2 divisors, whose sum is σ = 87981360. Its totient is φ = 87981358.

The previous prime is 87981353. The next prime is 87981373. The reversal of 87981359 is 95318978.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87981359 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87981353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43990679 + 43990680.

It is an arithmetic number, because the mean of its divisors is an integer number (43990680).

Almost surely, 2^87981359 is an apocalyptic number.

87981359 is a deficient number, since it is larger than the sum of its proper divisors (1).

87981359 is an equidigital number, since it uses as much as digits as its factorization.

87981359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 50.

The square root of 87981359 is about 9379.8378983861. The cubic root of 87981359 is about 444.7646089165.

The spelling of 87981359 in words is "eighty-seven million, nine hundred eighty-one thousand, three hundred fifty-nine".