53430989 has 2 divisors, whose sum is σ = 53430990. Its totient is φ = 53430988.

The previous prime is 53430977. The next prime is 53430991. The reversal of 53430989 is 98903435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52345225 + 1085764 = 7235^2 + 1042^2 .

It is a cyclic number.

It is not a de Polignac number, because 53430989 - 2¹⁶ = 53365453 is a prime.

Together with 53430991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53430929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26715494 + 26715495.

It is an arithmetic number, because the mean of its divisors is an integer number (26715495).

Almost surely, 2^53430989 is an apocalyptic number.

It is an amenable number.

53430989 is a deficient number, since it is larger than the sum of its proper divisors (1).

53430989 is an equidigital number, since it uses as much as digits as its factorization.

53430989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 53430989 is about 7309.6504020370. The cubic root of 53430989 is about 376.6440152232.

The spelling of 53430989 in words is "fifty-three million, four hundred thirty thousand, nine hundred eighty-nine".