13402229 has 2 divisors, whose sum is σ = 13402230. Its totient is φ = 13402228.

The previous prime is 13402223. The next prime is 13402237. The reversal of 13402229 is 92220431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9394225 + 4008004 = 3065^2 + 2002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13402229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13402223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6701114 + 6701115.

It is an arithmetic number, because the mean of its divisors is an integer number (6701115).

Almost surely, 2^13402229 is an apocalyptic number.

It is an amenable number.

13402229 is a deficient number, since it is larger than the sum of its proper divisors (1).

13402229 is an equidigital number, since it uses as much as digits as its factorization.

13402229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 13402229 is about 3660.9054890833. The cubic root of 13402229 is about 237.5339430711.

It can be divided in two parts, 13402 and 229, that added together give a palindrome (13631).

The spelling of 13402229 in words is "thirteen million, four hundred two thousand, two hundred twenty-nine".