238978097 has 2 divisors, whose sum is σ = 238978098. Its totient is φ = 238978096.

The previous prime is 238978093. The next prime is 238978123. The reversal of 238978097 is 790879832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190550416 + 48427681 = 13804^2 + 6959^2 .

It is a cyclic number.

It is not a de Polignac number, because 238978097 - 2² = 238978093 is a prime.

It is a super-2 number, since 2×238978097² = 114221061691482818, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238978093) 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, 119489048 + 119489049.

It is an arithmetic number, because the mean of its divisors is an integer number (119489049).

Almost surely, 2^238978097 is an apocalyptic number.

It is an amenable number.

238978097 is a deficient number, since it is larger than the sum of its proper divisors (1).

238978097 is an equidigital number, since it uses as much as digits as its factorization.

238978097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 238978097 is about 15458.9164238636. The cubic root of 238978097 is about 620.5632212933.

The spelling of 238978097 in words is "two hundred thirty-eight million, nine hundred seventy-eight thousand, ninety-seven".