53943444 has 18 divisors (see below), whose sum is σ = 136357130. Its totient is φ = 17981136.

The previous prime is 53943437. The next prime is 53943467. The reversal of 53943444 is 44434935.

It is a happy number.

53943444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 49533444 + 4410000 = 7038^2 + 2100^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×53943444² = 5819790301162272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1498429 = 53943444 / (5 + 3 + 9 + 4 + 3 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 53943399 and 53943408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 749179 + ... + 749250.

Almost surely, 2^53943444 is an apocalyptic number.

It is an amenable number.

53943444 is an abundant number, since it is smaller than the sum of its proper divisors (82413686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53943444 is a wasteful number, since it uses less digits than its factorization.

53943444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498439 (or 1498434 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 53943444 is about 7344.6200718621. The cubic root of 53943444 is about 377.8443131431.

The spelling of 53943444 in words is "fifty-three million, nine hundred forty-three thousand, four hundred forty-four".