308249 has 2 divisors, whose sum is σ = 308250. Its totient is φ = 308248.

The previous prime is 308219. The next prime is 308263. The reversal of 308249 is 942803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198025 + 110224 = 445^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 308249 - 2¹² = 304153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (308219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154124 + 154125.

It is an arithmetic number, because the mean of its divisors is an integer number (154125).

2³⁰⁸²⁴⁹ is an apocalyptic number.

It is an amenable number.

308249 is a deficient number, since it is larger than the sum of its proper divisors (1).

308249 is an equidigital number, since it uses as much as digits as its factorization.

308249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 308249 is about 555.2017651269. The cubic root of 308249 is about 67.5513281290.

The spelling of 308249 in words is "three hundred eight thousand, two hundred forty-nine".