13920349 has 2 divisors, whose sum is σ = 13920350. Its totient is φ = 13920348.

The previous prime is 13920337. The next prime is 13920367. The reversal of 13920349 is 94302931.

13920349 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8514724 + 5405625 = 2918^2 + 2325^2 .

It is an emirp because it is prime and its reverse (94302931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13920349 - 2¹¹ = 13918301 is a prime.

It is a super-2 number, since 2×13920349² = 387552232563602, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13920349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13920149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6960174 + 6960175.

It is an arithmetic number, because the mean of its divisors is an integer number (6960175).

Almost surely, 2^13920349 is an apocalyptic number.

It is an amenable number.

13920349 is a deficient number, since it is larger than the sum of its proper divisors (1).

13920349 is an equidigital number, since it uses as much as digits as its factorization.

13920349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 13920349 is about 3730.9983918517. The cubic root of 13920349 is about 240.5562848485.

The spelling of 13920349 in words is "thirteen million, nine hundred twenty thousand, three hundred forty-nine".