39219040 has 144 divisors (see below), whose sum is σ = 112910112. Its totient is φ = 12607488.

The previous prime is 39219029. The next prime is 39219041. The reversal of 39219040 is 4091293.

It is a happy number.

39219040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39219041) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 404272 + ... + 404368.

It is an arithmetic number, because the mean of its divisors is an integer number (784098).

Almost surely, 2^39219040 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 39219040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56455056).

39219040 is an abundant number, since it is smaller than the sum of its proper divisors (73691072).

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

39219040 is a wasteful number, since it uses less digits than its factorization.

39219040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 39219040 is about 6262.5106786336. The cubic root of 39219040 is about 339.7548405696.

The spelling of 39219040 in words is "thirty-nine million, two hundred nineteen thousand, forty".