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14879881 is a prime number
BaseRepresentation
bin111000110000…
…110010001001
31000222222100201
4320300302021
512302124011
61250532201
7240322402
oct70606211
930888321
1014879881
118443525
124b97061
13310ca83
141d949a9
15148dcc1
hexe30c89

14879881 has 2 divisors, whose sum is σ = 14879882. Its totient is φ = 14879880.

The previous prime is 14879861. The next prime is 14879899. The reversal of 14879881 is 18897841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13808656 + 1071225 = 3716^2 + 1035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14879881 is a prime.

It is a super-2 number, since 2×148798812 = 442821717148322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14879861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7439940 + 7439941.

It is an arithmetic number, because the mean of its divisors is an integer number (7439941).

Almost surely, 214879881 is an apocalyptic number.

It is an amenable number.

14879881 is a deficient number, since it is larger than the sum of its proper divisors (1).

14879881 is an equidigital number, since it uses as much as digits as its factorization.

14879881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 46.

The square root of 14879881 is about 3857.4448797099. Note that the first 3 decimals coincide. The cubic root of 14879881 is about 245.9611336134.

The spelling of 14879881 in words is "fourteen million, eight hundred seventy-nine thousand, eight hundred eighty-one".