308899117 has 2 divisors, whose sum is σ = 308899118. Its totient is φ = 308899116.

The previous prime is 308899111. The next prime is 308899127. The reversal of 308899117 is 711998803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175589001 + 133310116 = 13251^2 + 11546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-308899117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (308899111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154449558 + 154449559.

It is an arithmetic number, because the mean of its divisors is an integer number (154449559).

Almost surely, 2^308899117 is an apocalyptic number.

It is an amenable number.

308899117 is a deficient number, since it is larger than the sum of its proper divisors (1).

308899117 is an equidigital number, since it uses as much as digits as its factorization.

308899117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 46.

The square root of 308899117 is about 17575.5260803198. The cubic root of 308899117 is about 675.9878481587.

The spelling of 308899117 in words is "three hundred eight million, eight hundred ninety-nine thousand, one hundred seventeen".