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14938981 is a prime number
BaseRepresentation
bin111000111111…
…001101100101
31001002222102121
4320333031211
512311021411
61252105541
7240656611
oct70771545
931088377
1014938981
118483972
1250052b1
133130945
141dac341
1514a1571
hexe3f365

14938981 has 2 divisors, whose sum is σ = 14938982. Its totient is φ = 14938980.

The previous prime is 14938969. The next prime is 14938991. The reversal of 14938981 is 18983941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13653025 + 1285956 = 3695^2 + 1134^2 .

It is a cyclic number.

It is not a de Polignac number, because 14938981 - 25 = 14938949 is a prime.

It is a super-2 number, since 2×149389812 = 446346306636722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14938901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7469490 + 7469491.

It is an arithmetic number, because the mean of its divisors is an integer number (7469491).

Almost surely, 214938981 is an apocalyptic number.

It is an amenable number.

14938981 is a deficient number, since it is larger than the sum of its proper divisors (1).

14938981 is an equidigital number, since it uses as much as digits as its factorization.

14938981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 43.

The square root of 14938981 is about 3865.0977995388. The cubic root of 14938981 is about 246.2863400722.

The spelling of 14938981 in words is "fourteen million, nine hundred thirty-eight thousand, nine hundred eighty-one".