13993429 has 2 divisors, whose sum is σ = 13993430. Its totient is φ = 13993428.

The previous prime is 13993411. The next prime is 13993433. The reversal of 13993429 is 92439931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8122500 + 5870929 = 2850^2 + 2423^2 .

It is a cyclic number.

It is not a de Polignac number, because 13993429 - 2¹¹ = 13991381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13993391 and 13993400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13993409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6996714 + 6996715.

It is an arithmetic number, because the mean of its divisors is an integer number (6996715).

Almost surely, 2^13993429 is an apocalyptic number.

It is an amenable number.

13993429 is a deficient number, since it is larger than the sum of its proper divisors (1).

13993429 is an equidigital number, since it uses as much as digits as its factorization.

13993429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 40.

The square root of 13993429 is about 3740.7791969054. The cubic root of 13993429 is about 240.9765132670.

The spelling of 13993429 in words is "thirteen million, nine hundred ninety-three thousand, four hundred twenty-nine".