238461869 has 2 divisors, whose sum is σ = 238461870. Its totient is φ = 238461868.

The previous prime is 238461829. The next prime is 238461947. The reversal of 238461869 is 968164832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122102500 + 116359369 = 11050^2 + 10787^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238461869 is a prime.

It is a super-2 number, since 2×238461869² = 113728125933946322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238461829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119230934 + 119230935.

It is an arithmetic number, because the mean of its divisors is an integer number (119230935).

Almost surely, 2^238461869 is an apocalyptic number.

It is an amenable number.

238461869 is a deficient number, since it is larger than the sum of its proper divisors (1).

238461869 is an equidigital number, since it uses as much as digits as its factorization.

238461869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 47.

The square root of 238461869 is about 15442.2106254254. The cubic root of 238461869 is about 620.1160630793.

The spelling of 238461869 in words is "two hundred thirty-eight million, four hundred sixty-one thousand, eight hundred sixty-nine".