71450109 has 12 divisors (see below), whose sum is σ = 103322752. Its totient is φ = 47579400.

The previous prime is 71450107. The next prime is 71450111. The reversal of 71450109 is 90105417.

It is an interprime number because it is at equal distance from previous prime (71450107) and next prime (71450111).

It is not a de Polignac number, because 71450109 - 2¹ = 71450107 is a prime.

It is a super-2 number, since 2×71450109² = 10210236152223762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71450107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4914 + ... + 12924.

Almost surely, 2^71450109 is an apocalyptic number.

It is an amenable number.

71450109 is a deficient number, since it is larger than the sum of its proper divisors (31872643).

71450109 is a wasteful number, since it uses less digits than its factorization.

71450109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9008 (or 9005 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 71450109 is about 8452.8166311591. The cubic root of 71450109 is about 414.9549648716.

The spelling of 71450109 in words is "seventy-one million, four hundred fifty thousand, one hundred nine".