13890733 has 2 divisors, whose sum is σ = 13890734. Its totient is φ = 13890732.

The previous prime is 13890731. The next prime is 13890743. The reversal of 13890733 is 33709831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8311689 + 5579044 = 2883^2 + 2362^2 .

It is a cyclic number.

It is not a de Polignac number, because 13890733 - 2¹ = 13890731 is a prime.

Together with 13890731, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13890731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6945366 + 6945367.

It is an arithmetic number, because the mean of its divisors is an integer number (6945367).

Almost surely, 2^13890733 is an apocalyptic number.

It is an amenable number.

13890733 is a deficient number, since it is larger than the sum of its proper divisors (1).

13890733 is an equidigital number, since it uses as much as digits as its factorization.

13890733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 13890733 is about 3727.0273677557. The cubic root of 13890733 is about 240.3855665876.

The spelling of 13890733 in words is "thirteen million, eight hundred ninety thousand, seven hundred thirty-three".