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13942211 = 27894999
BaseRepresentation
bin110101001011…
…110111000011
3222020100010012
4311023313003
512032122321
61214455135
7226335563
oct65136703
928210105
1013942211
117962a98
1248044ab
132b7203a
141bccda3
15135605b
hexd4bdc3

13942211 has 4 divisors (see below), whose sum is σ = 13950000. Its totient is φ = 13934424.

The previous prime is 13942177. The next prime is 13942217. The reversal of 13942211 is 11224931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 11224931 = 19335807.

It is a cyclic number.

It is not a de Polignac number, because 13942211 - 26 = 13942147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13942217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290 + ... + 5288.

It is an arithmetic number, because the mean of its divisors is an integer number (3487500).

Almost surely, 213942211 is an apocalyptic number.

13942211 is a deficient number, since it is larger than the sum of its proper divisors (7789).

13942211 is an equidigital number, since it uses as much as digits as its factorization.

13942211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788.

The product of its digits is 432, while the sum is 23.

The square root of 13942211 is about 3733.9270212472. The cubic root of 13942211 is about 240.6821507249.

The spelling of 13942211 in words is "thirteen million, nine hundred forty-two thousand, two hundred eleven".

Divisors: 1 2789 4999 13942211