3909870438 has 32 divisors (see below), whose sum is σ = 8038833120. Its totient is φ = 1266842880.

The previous prime is 3909870431. The next prime is 3909870463. The reversal of 3909870438 is 8340789093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3909870431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238258 + ... + 254138.

It is an arithmetic number, because the mean of its divisors is an integer number (251213535).

Almost surely, 2^3909870438 is an apocalyptic number.

3909870438 is an abundant number, since it is smaller than the sum of its proper divisors (4128962682).

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

3909870438 is a wasteful number, since it uses less digits than its factorization.

3909870438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17032.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 3909870438 is about 62528.9567960317. The cubic root of 3909870438 is about 1575.3877185055.

The spelling of 3909870438 in words is "three billion, nine hundred nine million, eight hundred seventy thousand, four hundred thirty-eight".