53979444 has 18 divisors (see below), whose sum is σ = 136448130. Its totient is φ = 17993136.

The previous prime is 53979439. The next prime is 53979473. The reversal of 53979444 is 44497935.

It is a happy number.

53979444 is a `hidden beast` number, since 539 + 79 + 4 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 41447844 + 12531600 = 6438^2 + 3540^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 53979444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 749679 + ... + 749750.

Almost surely, 2^53979444 is an apocalyptic number.

It is an amenable number.

53979444 is an abundant number, since it is smaller than the sum of its proper divisors (82468686).

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

53979444 is a wasteful number, since it uses less digits than its factorization.

53979444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499439 (or 1499434 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 53979444 is about 7347.0704365754. The cubic root of 53979444 is about 377.9283478868.

It can be divided in two parts, 5397 and 9444, that added together give a palindrome (14841).

The spelling of 53979444 in words is "fifty-three million, nine hundred seventy-nine thousand, four hundred forty-four".