13229977 has 4 divisors (see below), whose sum is σ = 13245876. Its totient is φ = 13214080.

The previous prime is 13229941. The next prime is 13229981. The reversal of 13229977 is 77992231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77992231 = 631 ⋅123601.

It can be written as a sum of positive squares in 2 ways, for example, as 3345241 + 9884736 = 1829^2 + 3144^2 .

It is a cyclic number.

It is not a de Polignac number, because 13229977 - 2¹⁵ = 13197209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13229477) 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, 6628 + ... + 8389.

It is an arithmetic number, because the mean of its divisors is an integer number (3311469).

Almost surely, 2^13229977 is an apocalyptic number.

It is an amenable number.

13229977 is a deficient number, since it is larger than the sum of its proper divisors (15899).

13229977 is an equidigital number, since it uses as much as digits as its factorization.

13229977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15898.

The product of its digits is 47628, while the sum is 40.

The square root of 13229977 is about 3637.3035342132. The cubic root of 13229977 is about 236.5119178365.

The spelling of 13229977 in words is "thirteen million, two hundred twenty-nine thousand, nine hundred seventy-seven".