13940029 has 2 divisors, whose sum is σ = 13940030. Its totient is φ = 13940028.

The previous prime is 13940027. The next prime is 13940057. The reversal of 13940029 is 92004931.

13940029 = T₃₀₄₇ + T₃₀₄₈ + T₃₀₄₉.

It is a happy number.

It is an a-pointer prime, because the next prime (13940057) can be obtained adding 13940029 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13704804 + 235225 = 3702^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 13940029 - 2¹ = 13940027 is a prime.

Together with 13940027, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13939979 and 13940006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13940021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6970014 + 6970015.

It is an arithmetic number, because the mean of its divisors is an integer number (6970015).

Almost surely, 2^13940029 is an apocalyptic number.

13940029 is the 3049-th centered triangular number.

It is an amenable number.

13940029 is a deficient number, since it is larger than the sum of its proper divisors (1).

13940029 is an equidigital number, since it uses as much as digits as its factorization.

13940029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 13940029 is about 3733.6348241359. The cubic root of 13940029 is about 240.6695942312.

The spelling of 13940029 in words is "thirteen million, nine hundred forty thousand, twenty-nine".