71919093 has 4 divisors (see below), whose sum is σ = 95892128. Its totient is φ = 47946060.

The previous prime is 71919079. The next prime is 71919103. The reversal of 71919093 is 39091917.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 71919093 - 2⁴ = 71919077 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 (71919193) 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, 11986513 + ... + 11986518.

It is an arithmetic number, because the mean of its divisors is an integer number (23973032).

Almost surely, 2^71919093 is an apocalyptic number.

It is an amenable number.

71919093 is a deficient number, since it is larger than the sum of its proper divisors (23973035).

71919093 is a wasteful number, since it uses less digits than its factorization.

71919093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23973034.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 71919093 is about 8480.5125434728. The cubic root of 71919093 is about 415.8608790374.

The spelling of 71919093 in words is "seventy-one million, nine hundred nineteen thousand, ninety-three".