13972219 has 4 divisors (see below), whose sum is σ = 14074344. Its totient is φ = 13870096.

The previous prime is 13972193. The next prime is 13972237. The reversal of 13972219 is 91227931.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13972219 - 2⁵ = 13972187 is a prime.

It is a super-2 number, since 2×13972219² = 390445807567922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13972279) 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, 50857 + ... + 51130.

It is an arithmetic number, because the mean of its divisors is an integer number (3518586).

Almost surely, 2^13972219 is an apocalyptic number.

13972219 is a deficient number, since it is larger than the sum of its proper divisors (102125).

13972219 is a wasteful number, since it uses less digits than its factorization.

13972219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102124.

The product of its digits is 6804, while the sum is 34.

The square root of 13972219 is about 3737.9431509856. The cubic root of 13972219 is about 240.8547014188.

The spelling of 13972219 in words is "thirteen million, nine hundred seventy-two thousand, two hundred nineteen".