308849713 has 2 divisors, whose sum is σ = 308849714. Its totient is φ = 308849712.

The previous prime is 308849707. The next prime is 308849743. The reversal of 308849713 is 317948803.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308775184 + 74529 = 17572^2 + 273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-308849713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 308849713.

It is not a weakly prime, because it can be changed into another prime (308849743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154424856 + 154424857.

It is an arithmetic number, because the mean of its divisors is an integer number (154424857).

Almost surely, 2^308849713 is an apocalyptic number.

It is an amenable number.

308849713 is a deficient number, since it is larger than the sum of its proper divisors (1).

308849713 is an equidigital number, since it uses as much as digits as its factorization.

308849713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 308849713 is about 17574.1205469861. The cubic root of 308849713 is about 675.9518080382.

The spelling of 308849713 in words is "three hundred eight million, eight hundred forty-nine thousand, seven hundred thirteen".