238397969 has 2 divisors, whose sum is σ = 238397970. Its totient is φ = 238397968.

The previous prime is 238397941. The next prime is 238398001. The reversal of 238397969 is 969793832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137194369 + 101203600 = 11713^2 + 10060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238397969 is a prime.

It is a super-2 number, since 2×238397969² = 113667183246649922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238397909) 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, 119198984 + 119198985.

It is an arithmetic number, because the mean of its divisors is an integer number (119198985).

Almost surely, 2^238397969 is an apocalyptic number.

It is an amenable number.

238397969 is a deficient number, since it is larger than the sum of its proper divisors (1).

238397969 is an equidigital number, since it uses as much as digits as its factorization.

238397969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 56.

The square root of 238397969 is about 15440.1414825124. The cubic root of 238397969 is about 620.0606678407.

The spelling of 238397969 in words is "two hundred thirty-eight million, three hundred ninety-seven thousand, nine hundred sixty-nine".