238219897 has 2 divisors, whose sum is σ = 238219898. Its totient is φ = 238219896.

The previous prime is 238219879. The next prime is 238219909. The reversal of 238219897 is 798912832.

Together with previous prime (238219879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135582736 + 102637161 = 11644^2 + 10131^2 .

It is a cyclic number.

It is not a de Polignac number, because 238219897 - 2¹⁵ = 238187129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238219897.

It is not a weakly prime, because it can be changed into another prime (238219867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119109948 + 119109949.

It is an arithmetic number, because the mean of its divisors is an integer number (119109949).

Almost surely, 2^238219897 is an apocalyptic number.

It is an amenable number.

238219897 is a deficient number, since it is larger than the sum of its proper divisors (1).

238219897 is an equidigital number, since it uses as much as digits as its factorization.

238219897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 49.

The square root of 238219897 is about 15434.3738778092. The cubic root of 238219897 is about 619.9062440610.

The spelling of 238219897 in words is "two hundred thirty-eight million, two hundred nineteen thousand, eight hundred ninety-seven".