13906229 has 4 divisors (see below), whose sum is σ = 13978476. Its totient is φ = 13833984.

The previous prime is 13906183. The next prime is 13906261. The reversal of 13906229 is 92260931.

13906229 = 2152² + 2153² + 2154².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2244004 + 11662225 = 1498^2 + 3415^2 .

It is a cyclic number.

It is not a de Polignac number, because 13906229 - 2¹⁶ = 13840693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13906195 and 13906204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13906129) 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, 35834 + ... + 36219.

It is an arithmetic number, because the mean of its divisors is an integer number (3494619).

Almost surely, 2^13906229 is an apocalyptic number.

It is an amenable number.

13906229 is a deficient number, since it is larger than the sum of its proper divisors (72247).

13906229 is an equidigital number, since it uses as much as digits as its factorization.

13906229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72246.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 13906229 is about 3729.1056568566. The cubic root of 13906229 is about 240.4749218538.

The spelling of 13906229 in words is "thirteen million, nine hundred six thousand, two hundred twenty-nine".