13954139 has 2 divisors, whose sum is σ = 13954140. Its totient is φ = 13954138.

The previous prime is 13954103. The next prime is 13954181. The reversal of 13954139 is 93145931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13954139 - 2¹² = 13950043 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13954099 and 13954108.

It is not a weakly prime, because it can be changed into another prime (13954939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6977069 + 6977070.

It is an arithmetic number, because the mean of its divisors is an integer number (6977070).

Almost surely, 2^13954139 is an apocalyptic number.

13954139 is a deficient number, since it is larger than the sum of its proper divisors (1).

13954139 is an equidigital number, since it uses as much as digits as its factorization.

13954139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 35.

The square root of 13954139 is about 3735.5239257700. The cubic root of 13954139 is about 240.7507682103.

The spelling of 13954139 in words is "thirteen million, nine hundred fifty-four thousand, one hundred thirty-nine".