308896397 has 2 divisors, whose sum is σ = 308896398. Its totient is φ = 308896396.

The previous prime is 308896333. The next prime is 308896451. The reversal of 308896397 is 793698803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235039561 + 73856836 = 15331^2 + 8594^2 .

It is a cyclic number.

It is not a de Polignac number, because 308896397 - 2⁶ = 308896333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (308896327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154448198 + 154448199.

It is an arithmetic number, because the mean of its divisors is an integer number (154448199).

Almost surely, 2^308896397 is an apocalyptic number.

It is an amenable number.

308896397 is a deficient number, since it is larger than the sum of its proper divisors (1).

308896397 is an equidigital number, since it uses as much as digits as its factorization.

308896397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 308896397 is about 17575.4486998199. The cubic root of 308896397 is about 675.9858640240.

The spelling of 308896397 in words is "three hundred eight million, eight hundred ninety-six thousand, three hundred ninety-seven".