53933989 has 4 divisors (see below), whose sum is σ = 56772640. Its totient is φ = 51095340.

The previous prime is 53933959. The next prime is 53934059. The reversal of 53933989 is 98933935.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53933989 - 2¹³ = 53925797 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 (53933909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1419297 + ... + 1419334.

It is an arithmetic number, because the mean of its divisors is an integer number (14193160).

Almost surely, 2^53933989 is an apocalyptic number.

It is an amenable number.

53933989 is a deficient number, since it is larger than the sum of its proper divisors (2838651).

53933989 is a wasteful number, since it uses less digits than its factorization.

53933989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838650.

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

The square root of 53933989 is about 7343.9763752343. The cubic root of 53933989 is about 377.8222361525.

The spelling of 53933989 in words is "fifty-three million, nine hundred thirty-three thousand, nine hundred eighty-nine".