71400009 has 8 divisors (see below), whose sum is σ = 95450112. Its totient is φ = 47474960.

The previous prime is 71399969. The next prime is 71400011. The reversal of 71400009 is 90000417.

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 71400009 - 2¹⁷ = 71268937 is a prime.

It is a super-2 number, since 2×71400009² = 10195922570400162, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71400019) 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 7 ways as a sum of consecutive naturals, for example, 29922 + ... + 32219.

It is an arithmetic number, because the mean of its divisors is an integer number (11931264).

Almost surely, 2^71400009 is an apocalyptic number.

It is an amenable number.

71400009 is a deficient number, since it is larger than the sum of its proper divisors (24050103).

71400009 is a wasteful number, since it uses less digits than its factorization.

71400009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62527.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 71400009 is about 8449.8526022647. The cubic root of 71400009 is about 414.8579549674.

The spelling of 71400009 in words is "seventy-one million, four hundred thousand, nine".