43089138 has 16 divisors (see below), whose sum is σ = 95753760. Its totient is φ = 14363028.

The previous prime is 43089091. The next prime is 43089191. The reversal of 43089138 is 83198034.

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, 398920 + ... + 399027.

It is an arithmetic number, because the mean of its divisors is an integer number (5984610).

Almost surely, 2^43089138 is an apocalyptic number.

43089138 is an abundant number, since it is smaller than the sum of its proper divisors (52664622).

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

43089138 is a wasteful number, since it uses less digits than its factorization.

43089138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797958 (or 797952 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 43089138 is about 6564.2317143745. The cubic root of 43089138 is about 350.5817210444.

The spelling of 43089138 in words is "forty-three million, eighty-nine thousand, one hundred thirty-eight".