993053869 has 2 divisors, whose sum is σ = 993053870. Its totient is φ = 993053868.

The previous prime is 993053863. The next prime is 993053909. The reversal of 993053869 is 968350399.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 712089225 + 280964644 = 26685^2 + 16762^2 .

It is an emirp because it is prime and its reverse (968350399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 993053869 - 2⁵ = 993053837 is a prime.

It is a super-2 number, since 2×993053869² = 1972311973471738322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993053863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496526934 + 496526935.

It is an arithmetic number, because the mean of its divisors is an integer number (496526935).

Almost surely, 2^993053869 is an apocalyptic number.

It is an amenable number.

993053869 is a deficient number, since it is larger than the sum of its proper divisors (1).

993053869 is an equidigital number, since it uses as much as digits as its factorization.

993053869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The square root of 993053869 is about 31512.7572421075. The cubic root of 993053869 is about 997.6792412453.

The spelling of 993053869 in words is "nine hundred ninety-three million, fifty-three thousand, eight hundred sixty-nine".