4393969040 has 40 divisors (see below), whose sum is σ = 10492092600. Its totient is φ = 1710084096.

The previous prime is 4393969037. The next prime is 4393969123. The reversal of 4393969040 is 409693934.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 117332224 + 4276636816 = 10832^2 + 65396^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739265 + ... + 745184.

It is an arithmetic number, because the mean of its divisors is an integer number (262302315).

Almost surely, 2^4393969040 is an apocalyptic number.

4393969040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4393969040 is an abundant number, since it is smaller than the sum of its proper divisors (6098123560).

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

4393969040 is a wasteful number, since it uses less digits than its factorization.

4393969040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484499 (or 1484493 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 47.

The square root of 4393969040 is about 66287.0201472355. The cubic root of 4393969040 is about 1637.8935179948.

The spelling of 4393969040 in words is "four billion, three hundred ninety-three million, nine hundred sixty-nine thousand, forty".