43139908 has 12 divisors (see below), whose sum is σ = 86279872. Its totient is φ = 18488520.

The previous prime is 43139867. The next prime is 43139917. The reversal of 43139908 is 80993134.

43139908 is an admirable number.

It is a super-2 number, since 2×43139908² = 3722103324496928, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770328 + ... + 770383.

Almost surely, 2^43139908 is an apocalyptic number.

It is an amenable number.

43139908 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

43139908 is a wasteful number, since it uses less digits than its factorization.

43139908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540722 (or 1540720 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 43139908 is about 6568.0977459231. The cubic root of 43139908 is about 350.7193585773.

The spelling of 43139908 in words is "forty-three million, one hundred thirty-nine thousand, nine hundred eight".