13950109 has 2 divisors, whose sum is σ = 13950110. Its totient is φ = 13950108.

The previous prime is 13950107. The next prime is 13950113. The reversal of 13950109 is 90105931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12581209 + 1368900 = 3547^2 + 1170^2 .

It is an emirp because it is prime and its reverse (90105931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13950109 - 2¹ = 13950107 is a prime.

It is a super-2 number, since 2×13950109² = 389211082223762, which contains 22 as substring.

Together with 13950107, 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 (13950107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6975054 + 6975055.

It is an arithmetic number, because the mean of its divisors is an integer number (6975055).

Almost surely, 2^13950109 is an apocalyptic number.

It is an amenable number.

13950109 is a deficient number, since it is larger than the sum of its proper divisors (1).

13950109 is an equidigital number, since it uses as much as digits as its factorization.

13950109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 13950109 is about 3734.9844711859. The cubic root of 13950109 is about 240.7275894480.

The spelling of 13950109 in words is "thirteen million, nine hundred fifty thousand, one hundred nine".