53339989 has 4 divisors (see below), whose sum is σ = 53616556. Its totient is φ = 53063424.

The previous prime is 53339983. The next prime is 53340037. The reversal of 53339989 is 98993335.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19873764 + 33466225 = 4458^2 + 5785^2 .

It is a cyclic number.

It is not a de Polignac number, because 53339989 - 2³ = 53339981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53339981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137994 + ... + 138379.

It is an arithmetic number, because the mean of its divisors is an integer number (13404139).

Almost surely, 2^53339989 is an apocalyptic number.

It is an amenable number.

53339989 is a deficient number, since it is larger than the sum of its proper divisors (276567).

53339989 is a wasteful number, since it uses less digits than its factorization.

53339989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276566.

The product of its digits is 787320, while the sum is 49.

The square root of 53339989 is about 7303.4231015326. The cubic root of 53339989 is about 376.4300689564.

The spelling of 53339989 in words is "fifty-three million, three hundred thirty-nine thousand, nine hundred eighty-nine".