359981 has 2 divisors, whose sum is σ = 359982. Its totient is φ = 359980.

The previous prime is 359929. The next prime is 359987. The reversal of 359981 is 189953.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348100 + 11881 = 590^2 + 109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-359981 is a prime.

It is a super-2 number, since 2×359981² = 259172640722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (359987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 179990 + 179991.

It is an arithmetic number, because the mean of its divisors is an integer number (179991).

2³⁵⁹⁹⁸¹ is an apocalyptic number.

It is an amenable number.

359981 is a deficient number, since it is larger than the sum of its proper divisors (1).

359981 is an equidigital number, since it uses as much as digits as its factorization.

359981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 359981 is about 599.9841664577. The cubic root of 359981 is about 71.1366145683.

The spelling of 359981 in words is "three hundred fifty-nine thousand, nine hundred eighty-one".