71903093 has 8 divisors (see below), whose sum is σ = 75152280. Its totient is φ = 68705280.

The previous prime is 71903089. The next prime is 71903107. The reversal of 71903093 is 39030917.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19731364 + 52171729 = 4442^2 + 7223^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 71903093 - 2² = 71903089 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71903003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9968 + ... + 15593.

It is an arithmetic number, because the mean of its divisors is an integer number (9394035).

Almost surely, 2^71903093 is an apocalyptic number.

It is an amenable number.

71903093 is a deficient number, since it is larger than the sum of its proper divisors (3249187).

71903093 is a wasteful number, since it uses less digits than its factorization.

71903093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25687.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 71903093 is about 8479.5691517907. The cubic root of 71903093 is about 415.8300375864.

The spelling of 71903093 in words is "seventy-one million, nine hundred three thousand, ninety-three".