53969389 has 4 divisors (see below), whose sum is σ = 54095040. Its totient is φ = 53843740.

The previous prime is 53969353. The next prime is 53969393. The reversal of 53969389 is 98396935.

It is a happy number.

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 53969389 - 2⁹ = 53968877 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 (53969089) 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, 62179 + ... + 63040.

It is an arithmetic number, because the mean of its divisors is an integer number (13523760).

Almost surely, 2^53969389 is an apocalyptic number.

It is an amenable number.

53969389 is a deficient number, since it is larger than the sum of its proper divisors (125651).

53969389 is a wasteful number, since it uses less digits than its factorization.

53969389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125650.

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

The square root of 53969389 is about 7346.3861183578. The cubic root of 53969389 is about 377.9048802775.

The spelling of 53969389 in words is "fifty-three million, nine hundred sixty-nine thousand, three hundred eighty-nine".