30869 has 2 divisors, whose sum is σ = 30870. Its totient is φ = 30868.

The previous prime is 30859. The next prime is 30871. The reversal of 30869 is 96803.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18769 + 12100 = 137^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 30869 - 2⁴ = 30853 is a prime.

It is a super-2 number, since 2×30869² = 1905790322, which contains 22 as substring.

Together with 30871, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 7.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15434 + 15435.

It is an arithmetic number, because the mean of its divisors is an integer number (15435).

2³⁰⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

30869 is a deficient number, since it is larger than the sum of its proper divisors (1).

30869 is an equidigital number, since it uses as much as digits as its factorization.

30869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 30869 is about 175.6957597667. The cubic root of 30869 is about 31.3694944917.

The spelling of 30869 in words is "thirty thousand, eight hundred sixty-nine".