953988989 has 2 divisors, whose sum is σ = 953988990. Its totient is φ = 953988988.

The previous prime is 953988979. The next prime is 953989007. The reversal of 953988989 is 989889359.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 748296025 + 205692964 = 27355^2 + 14342^2 .

It is an emirp because it is prime and its reverse (989889359) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 953988989 - 2¹² = 953984893 is a prime.

It is a super-2 number, since 2×953988989² = 1820189982266484242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (953988979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 476994494 + 476994495.

It is an arithmetic number, because the mean of its divisors is an integer number (476994495).

Almost surely, 2^953988989 is an apocalyptic number.

It is an amenable number.

953988989 is a deficient number, since it is larger than the sum of its proper divisors (1).

953988989 is an equidigital number, since it uses as much as digits as its factorization.

953988989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50388480, while the sum is 68.

The square root of 953988989 is about 30886.7121753028. The cubic root of 953988989 is about 984.4215690528.

The spelling of 953988989 in words is "nine hundred fifty-three million, nine hundred eighty-eight thousand, nine hundred eighty-nine".