13020889 has 4 divisors (see below), whose sum is σ = 14881024. Its totient is φ = 11160756.

The previous prime is 13020883. The next prime is 13020893. The reversal of 13020889 is 98802031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98802031 = 3079 ⋅32089.

It is a cyclic number.

It is not a de Polignac number, because 13020889 - 2⁵ = 13020857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13020889.

It is not an unprimeable number, because it can be changed into a prime (13020883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930057 + ... + 930070.

It is an arithmetic number, because the mean of its divisors is an integer number (3720256).

Almost surely, 2^13020889 is an apocalyptic number.

It is an amenable number.

13020889 is a deficient number, since it is larger than the sum of its proper divisors (1860135).

13020889 is an equidigital number, since it uses as much as digits as its factorization.

13020889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860134.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 13020889 is about 3608.4468958265. The cubic root of 13020889 is about 235.2593424795.

The spelling of 13020889 in words is "thirteen million, twenty thousand, eight hundred eighty-nine".