238722769 has 2 divisors, whose sum is σ = 238722770. Its totient is φ = 238722768.

The previous prime is 238722719. The next prime is 238722797. The reversal of 238722769 is 967227832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233020225 + 5702544 = 15265^2 + 2388^2 .

It is a cyclic number.

It is not a de Polignac number, because 238722769 - 2¹⁷ = 238591697 is a prime.

It is a super-2 number, since 2×238722769² = 113977120878054722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (238722709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119361384 + 119361385.

It is an arithmetic number, because the mean of its divisors is an integer number (119361385).

Almost surely, 2^238722769 is an apocalyptic number.

It is an amenable number.

238722769 is a deficient number, since it is larger than the sum of its proper divisors (1).

238722769 is an equidigital number, since it uses as much as digits as its factorization.

238722769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 238722769 is about 15450.6559407683. The cubic root of 238722769 is about 620.3421359988.

The spelling of 238722769 in words is "two hundred thirty-eight million, seven hundred twenty-two thousand, seven hundred sixty-nine".