71408293 has 4 divisors (see below), whose sum is σ = 77899968. Its totient is φ = 64916620.

The previous prime is 71408243. The next prime is 71408297. The reversal of 71408293 is 39280417.

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 a cyclic number.

It is not a de Polignac number, because 71408293 - 2⁹ = 71407781 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 (71408297) by changing a digit.

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, 3245821 + ... + 3245842.

It is an arithmetic number, because the mean of its divisors is an integer number (19474992).

Almost surely, 2^71408293 is an apocalyptic number.

It is an amenable number.

71408293 is a deficient number, since it is larger than the sum of its proper divisors (6491675).

71408293 is a wasteful number, since it uses less digits than its factorization.

71408293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6491674.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 71408293 is about 8450.3427741128. The cubic root of 71408293 is about 414.8739986180.

The spelling of 71408293 in words is "seventy-one million, four hundred eight thousand, two hundred ninety-three".