71040949 has 4 divisors (see below), whose sum is σ = 81189664. Its totient is φ = 60892236.

The previous prime is 71040941. The next prime is 71040961. The reversal of 71040949 is 94904017.

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 71040949 - 2³ = 71040941 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 (71040941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5074347 + ... + 5074360.

It is an arithmetic number, because the mean of its divisors is an integer number (20297416).

Almost surely, 2^71040949 is an apocalyptic number.

It is an amenable number.

71040949 is a deficient number, since it is larger than the sum of its proper divisors (10148715).

71040949 is a wasteful number, since it uses less digits than its factorization.

71040949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10148714.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 71040949 is about 8428.5792990278. The cubic root of 71040949 is about 414.1613663781.

The spelling of 71040949 in words is "seventy-one million, forty thousand, nine hundred forty-nine".