12958081 has 4 divisors (see below), whose sum is σ = 12968964. Its totient is φ = 12947200.

The previous prime is 12958079. The next prime is 12958087. The reversal of 12958081 is 18085921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18085921 = 7 ⋅2583703.

It can be written as a sum of positive squares in 2 ways, for example, as 3837681 + 9120400 = 1959^2 + 3020^2 .

It is a cyclic number.

It is not a de Polignac number, because 12958081 - 2¹ = 12958079 is a prime.

It is a super-2 number, since 2×12958081² = 335823726405122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12958087) 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 3 ways as a sum of consecutive naturals, for example, 3400 + ... + 6121.

It is an arithmetic number, because the mean of its divisors is an integer number (3242241).

Almost surely, 2^12958081 is an apocalyptic number.

It is an amenable number.

12958081 is a deficient number, since it is larger than the sum of its proper divisors (10883).

12958081 is an equidigital number, since it uses as much as digits as its factorization.

12958081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10882.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 12958081 is about 3599.7334623552. The cubic root of 12958081 is about 234.8804643315.

The spelling of 12958081 in words is "twelve million, nine hundred fifty-eight thousand, eighty-one".