308396997 has 16 divisors (see below), whose sum is σ = 457920000. Its totient is φ = 205132032.

The previous prime is 308396929. The next prime is 308397007. The reversal of 308396997 is 799693803.

It is not a de Polignac number, because 308396997 - 2¹¹ = 308394949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308396927) 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 in 15 ways as a sum of consecutive naturals, for example, 597 + ... + 24842.

It is an arithmetic number, because the mean of its divisors is an integer number (28620000).

Almost surely, 2^308396997 is an apocalyptic number.

It is an amenable number.

308396997 is a deficient number, since it is larger than the sum of its proper divisors (149523003).

308396997 is a wasteful number, since it uses less digits than its factorization.

308396997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25897 (or 25891 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The square root of 308396997 is about 17561.2356342030. The cubic root of 308396997 is about 675.6213734961.

The spelling of 308396997 in words is "three hundred eight million, three hundred ninety-six thousand, nine hundred ninety-seven".