54439380 has 72 divisors (see below), whose sum is σ = 170843400. Its totient is φ = 14015232.

The previous prime is 54439369. The next prime is 54439387. The reversal of 54439380 is 8393445.

54439380 is a `hidden beast` number, since 544 + 39 + 3 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 21399876 + 33039504 = 4626^2 + 5748^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54439387) 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, 6 + ... + 10434.

It is an arithmetic number, because the mean of its divisors is an integer number (2372825).

Almost surely, 2^54439380 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 54439380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85421700).

54439380 is an abundant number, since it is smaller than the sum of its proper divisors (116404020).

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

54439380 is a wasteful number, since it uses less digits than its factorization.

54439380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10473 (or 10468 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 54439380 is about 7378.3046833267. The cubic root of 54439380 is about 378.9987027800.

The spelling of 54439380 in words is "fifty-four million, four hundred thirty-nine thousand, three hundred eighty".