8556349 has 2 divisors, whose sum is σ = 8556350. Its totient is φ = 8556348.

The previous prime is 8556347. The next prime is 8556419. The reversal of 8556349 is 9436558.

8556349 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4972900 + 3583449 = 2230^2 + 1893^2 .

It is a cyclic number.

It is not a de Polignac number, because 8556349 - 2¹ = 8556347 is a prime.

It is a super-2 number, since 2×8556349² = 146422216419602, which contains 22 as substring.

Together with 8556347, it forms a pair of twin primes.

It is a Chen prime.

8556349 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8556347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4278174 + 4278175.

It is an arithmetic number, because the mean of its divisors is an integer number (4278175).

Almost surely, 2^8556349 is an apocalyptic number.

It is an amenable number.

8556349 is a deficient number, since it is larger than the sum of its proper divisors (1).

8556349 is an equidigital number, since it uses as much as digits as its factorization.

8556349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 40.

The square root of 8556349 is about 2925.1237580656. The cubic root of 8556349 is about 204.5327370709.

The spelling of 8556349 in words is "eight million, five hundred fifty-six thousand, three hundred forty-nine".