308073089 has 2 divisors, whose sum is σ = 308073090. Its totient is φ = 308073088.

The previous prime is 308073053. The next prime is 308073091. The reversal of 308073089 is 980370803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201157489 + 106915600 = 14183^2 + 10340^2 .

It is a cyclic number.

It is not a de Polignac number, because 308073089 - 2²⁰ = 307024513 is a prime.

Together with 308073091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (308073289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154036544 + 154036545.

It is an arithmetic number, because the mean of its divisors is an integer number (154036545).

Almost surely, 2^308073089 is an apocalyptic number.

It is an amenable number.

308073089 is a deficient number, since it is larger than the sum of its proper divisors (1).

308073089 is an equidigital number, since it uses as much as digits as its factorization.

308073089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 308073089 is about 17552.0109674077. The cubic root of 308073089 is about 675.3847565921.

The spelling of 308073089 in words is "three hundred eight million, seventy-three thousand, eighty-nine".