53942389 has 4 divisors (see below), whose sum is σ = 53965024. Its totient is φ = 53919756.

The previous prime is 53942381. The next prime is 53942423. The reversal of 53942389 is 98324935.

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 53942389 - 2³ = 53942381 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 (53942381) 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, 7257 + ... + 12670.

It is an arithmetic number, because the mean of its divisors is an integer number (13491256).

Almost surely, 2^53942389 is an apocalyptic number.

It is an amenable number.

53942389 is a deficient number, since it is larger than the sum of its proper divisors (22635).

53942389 is a wasteful number, since it uses less digits than its factorization.

53942389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22634.

The product of its digits is 233280, while the sum is 43.

The square root of 53942389 is about 7344.5482502330. The cubic root of 53942389 is about 377.8418498945.

The spelling of 53942389 in words is "fifty-three million, nine hundred forty-two thousand, three hundred eighty-nine".