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13940789 is a prime number
BaseRepresentation
bin110101001011…
…100000110101
3222020021011112
4311023200311
512032101124
61214444405
7226331462
oct65134065
928207145
1013940789
117961a15
124803705
132b714b5
141bcc669
15135590e
hexd4b835

13940789 has 2 divisors, whose sum is σ = 13940790. Its totient is φ = 13940788.

The previous prime is 13940777. The next prime is 13940803. The reversal of 13940789 is 98704931.

It is a happy number.

13940789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13912900 + 27889 = 3730^2 + 167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13940789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13940189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6970394 + 6970395.

It is an arithmetic number, because the mean of its divisors is an integer number (6970395).

Almost surely, 213940789 is an apocalyptic number.

It is an amenable number.

13940789 is a deficient number, since it is larger than the sum of its proper divisors (1).

13940789 is an equidigital number, since it uses as much as digits as its factorization.

13940789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 13940789 is about 3733.7366002438. The cubic root of 13940789 is about 240.6739678607.

The spelling of 13940789 in words is "thirteen million, nine hundred forty thousand, seven hundred eighty-nine".