13919233 has 2 divisors, whose sum is σ = 13919234. Its totient is φ = 13919232.

The previous prime is 13919203. The next prime is 13919251. The reversal of 13919233 is 33291931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13630864 + 288369 = 3692^2 + 537^2 .

It is an emirp because it is prime and its reverse (33291931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13919233 - 2⁵ = 13919201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13919195 and 13919204.

It is not a weakly prime, because it can be changed into another prime (13919203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6959616 + 6959617.

It is an arithmetic number, because the mean of its divisors is an integer number (6959617).

Almost surely, 2^13919233 is an apocalyptic number.

It is an amenable number.

13919233 is a deficient number, since it is larger than the sum of its proper divisors (1).

13919233 is an equidigital number, since it uses as much as digits as its factorization.

13919233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4374, while the sum is 31.

The square root of 13919233 is about 3730.8488310303. The cubic root of 13919233 is about 240.5498561785.

The spelling of 13919233 in words is "thirteen million, nine hundred nineteen thousand, two hundred thirty-three".