53919404 has 72 divisors (see below), whose sum is σ = 121519440. Its totient is φ = 20697600.

The previous prime is 53919403. The next prime is 53919413. The reversal of 53919404 is 40491935.

It is not an unprimeable number, because it can be changed into a prime (53919403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191744 + ... + 192024.

It is an arithmetic number, because the mean of its divisors is an integer number (1687770).

Almost surely, 2^53919404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53919404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60759720).

53919404 is an abundant number, since it is smaller than the sum of its proper divisors (67600036).

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

53919404 is a wasteful number, since it uses less digits than its factorization.

53919404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 53919404 is about 7342.9833174262. The cubic root of 53919404 is about 377.7881757871.

It can be divided in two parts, 539 and 19404, that multiplied together give a square (10458756 = 3234²).

The spelling of 53919404 in words is "fifty-three million, nine hundred nineteen thousand, four hundred four".