12991059 has 12 divisors (see below), whose sum is σ = 18856552. Its totient is φ = 8618400.

The previous prime is 12991057. The next prime is 12991061. The reversal of 12991059 is 95019921.

12991059 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12991057) and next prime (12991061).

It is not a de Polignac number, because 12991059 - 2¹ = 12991057 is a prime.

It is a super-2 number, since 2×12991059² = 337535227882962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12991051) 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, 1522 + ... + 5319.

Almost surely, 2^12991059 is an apocalyptic number.

12991059 is a deficient number, since it is larger than the sum of its proper divisors (5865493).

12991059 is a wasteful number, since it uses less digits than its factorization.

12991059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7058 (or 7055 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 36.

The square root of 12991059 is about 3604.3111685869. The cubic root of 12991059 is about 235.0795505541.

The spelling of 12991059 in words is "twelve million, nine hundred ninety-one thousand, fifty-nine".