71099138 has 8 divisors (see below), whose sum is σ = 116344080. Its totient is φ = 32317780.

The previous prime is 71099113. The next prime is 71099179. The reversal of 71099138 is 83199017.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1615868 + ... + 1615911.

It is an arithmetic number, because the mean of its divisors is an integer number (14543010).

Almost surely, 2^71099138 is an apocalyptic number.

71099138 is a deficient number, since it is larger than the sum of its proper divisors (45244942).

71099138 is a wasteful number, since it uses less digits than its factorization.

71099138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3231792.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 71099138 is about 8432.0304790720. The cubic root of 71099138 is about 414.2744141304.

The spelling of 71099138 in words is "seventy-one million, ninety-nine thousand, one hundred thirty-eight".