993743969 has 2 divisors, whose sum is σ = 993743970. Its totient is φ = 993743968.

The previous prime is 993743939. The next prime is 993744041. The reversal of 993743969 is 969347399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 580231744 + 413512225 = 24088^2 + 20335^2 .

It is a cyclic number.

It is not a de Polignac number, because 993743969 - 2²⁰ = 992695393 is a prime.

It is a super-2 number, since 2×993743969² = 1975054151847745922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (993743939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496871984 + 496871985.

It is an arithmetic number, because the mean of its divisors is an integer number (496871985).

Almost surely, 2^993743969 is an apocalyptic number.

It is an amenable number.

993743969 is a deficient number, since it is larger than the sum of its proper divisors (1).

993743969 is an equidigital number, since it uses as much as digits as its factorization.

993743969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9920232, while the sum is 59.

The square root of 993743969 is about 31523.7048742688. The cubic root of 993743969 is about 997.9102924977.

The spelling of 993743969 in words is "nine hundred ninety-three million, seven hundred forty-three thousand, nine hundred sixty-nine".