71438099 has 4 divisors (see below), whose sum is σ = 71983560. Its totient is φ = 70892640.

The previous prime is 71438071. The next prime is 71438149. The reversal of 71438099 is 99083417.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99083417 = 4919 ⋅20143.

It is a cyclic number.

It is not a de Polignac number, because 71438099 - 2²⁰ = 70389523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71438399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272534 + ... + 272795.

It is an arithmetic number, because the mean of its divisors is an integer number (17995890).

Almost surely, 2^71438099 is an apocalyptic number.

71438099 is a deficient number, since it is larger than the sum of its proper divisors (545461).

71438099 is a wasteful number, since it uses less digits than its factorization.

71438099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545460.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 71438099 is about 8452.1061872175. The cubic root of 71438099 is about 414.9317137366.

The spelling of 71438099 in words is "seventy-one million, four hundred thirty-eight thousand, ninety-nine".