13009971 has 8 divisors (see below), whose sum is σ = 18681040. Its totient is φ = 8006112.

The previous prime is 13009967. The next prime is 13010047. The reversal of 13009971 is 17990031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13009971 - 2² = 13009967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13009901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166756 + ... + 166833.

It is an arithmetic number, because the mean of its divisors is an integer number (2335130).

Almost surely, 2^13009971 is an apocalyptic number.

13009971 is a deficient number, since it is larger than the sum of its proper divisors (5671069).

13009971 is a wasteful number, since it uses less digits than its factorization.

13009971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333605.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 13009971 is about 3606.9337393415. The cubic root of 13009971 is about 235.1935691992.

The spelling of 13009971 in words is "thirteen million, nine thousand, nine hundred seventy-one".