71404407 has 6 divisors (see below), whose sum is σ = 103139712. Its totient is φ = 47602932.

The previous prime is 71404391. The next prime is 71404429. The reversal of 71404407 is 70440417.

It is not a de Polignac number, because 71404407 - 2⁴ = 71404391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71404477) 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 5 ways as a sum of consecutive naturals, for example, 3966903 + ... + 3966920.

It is an arithmetic number, because the mean of its divisors is an integer number (17189952).

Almost surely, 2^71404407 is an apocalyptic number.

71404407 is a deficient number, since it is larger than the sum of its proper divisors (31735305).

71404407 is a wasteful number, since it uses less digits than its factorization.

71404407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7933829 (or 7933826 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 71404407 is about 8450.1128394833. The cubic root of 71404407 is about 414.8664727432.

The spelling of 71404407 in words is "seventy-one million, four hundred four thousand, four hundred seven".