938742869 has 2 divisors, whose sum is σ = 938742870. Its totient is φ = 938742868.

The previous prime is 938742851. The next prime is 938742887. The reversal of 938742869 is 968247839.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (938742851) and next prime (938742887).

It can be written as a sum of positive squares in only one way, i.e., 663680644 + 275062225 = 25762^2 + 16585^2 .

It is a cyclic number.

It is not a de Polignac number, because 938742869 - 2⁸ = 938742613 is a prime.

It is a super-2 number, since 2×938742869² = 1762476348196702322, 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 (938742809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469371434 + 469371435.

It is an arithmetic number, because the mean of its divisors is an integer number (469371435).

Almost surely, 2^938742869 is an apocalyptic number.

It is an amenable number.

938742869 is a deficient number, since it is larger than the sum of its proper divisors (1).

938742869 is an equidigital number, since it uses as much as digits as its factorization.

938742869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 56.

The square root of 938742869 is about 30638.9110282986. The cubic root of 938742869 is about 979.1492230949.

The spelling of 938742869 in words is "nine hundred thirty-eight million, seven hundred forty-two thousand, eight hundred sixty-nine".