13969537 has 2 divisors, whose sum is σ = 13969538. Its totient is φ = 13969536.

The previous prime is 13969531. The next prime is 13969559. The reversal of 13969537 is 73596931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11532816 + 2436721 = 3396^2 + 1561^2 .

It is a cyclic number.

It is not a de Polignac number, because 13969537 - 2²³ = 5580929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13969493 and 13969502.

It is not a weakly prime, because it can be changed into another prime (13969531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6984768 + 6984769.

It is an arithmetic number, because the mean of its divisors is an integer number (6984769).

Almost surely, 2^13969537 is an apocalyptic number.

It is an amenable number.

13969537 is a deficient number, since it is larger than the sum of its proper divisors (1).

13969537 is an equidigital number, since it uses as much as digits as its factorization.

13969537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153090, while the sum is 43.

The square root of 13969537 is about 3737.5843803184. The cubic root of 13969537 is about 240.8392895589.

The spelling of 13969537 in words is "thirteen million, nine hundred sixty-nine thousand, five hundred thirty-seven".