13749667 has 2 divisors, whose sum is σ = 13749668. Its totient is φ = 13749666.

The previous prime is 13749661. The next prime is 13749679. The reversal of 13749667 is 76694731.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13749667 is a prime.

It is a super-2 number, since 2×13749667² = 378106685221778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13749661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6874833 + 6874834.

It is an arithmetic number, because the mean of its divisors is an integer number (6874834).

Almost surely, 2^13749667 is an apocalyptic number.

13749667 is a deficient number, since it is larger than the sum of its proper divisors (1).

13749667 is an equidigital number, since it uses as much as digits as its factorization.

13749667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 43.

The square root of 13749667 is about 3708.0543415651. The cubic root of 13749667 is about 239.5690588462.

The spelling of 13749667 in words is "thirteen million, seven hundred forty-nine thousand, six hundred sixty-seven".