53949389 has 8 divisors (see below), whose sum is σ = 59196312. Its totient is φ = 48859200.

The previous prime is 53949377. The next prime is 53949433. The reversal of 53949389 is 98394935.

It can be written as a sum of positive squares in 4 ways, for example, as 293764 + 53655625 = 542^2 + 7325^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53949389 - 2¹⁶ = 53883853 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 (53949089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38462 + ... + 39839.

It is an arithmetic number, because the mean of its divisors is an integer number (7399539).

Almost surely, 2^53949389 is an apocalyptic number.

It is an amenable number.

53949389 is a deficient number, since it is larger than the sum of its proper divisors (5246923).

53949389 is a wasteful number, since it uses less digits than its factorization.

53949389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78367.

The product of its digits is 1049760, while the sum is 50.

The square root of 53949389 is about 7345.0247787193. The cubic root of 53949389 is about 377.8581931241.

The spelling of 53949389 in words is "fifty-three million, nine hundred forty-nine thousand, three hundred eighty-nine".