13908493 has 2 divisors, whose sum is σ = 13908494. Its totient is φ = 13908492.

The previous prime is 13908481. The next prime is 13908511. The reversal of 13908493 is 39480931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13675204 + 233289 = 3698^2 + 483^2 .

It is a cyclic number.

It is not a de Polignac number, because 13908493 - 2¹³ = 13900301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13908443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6954246 + 6954247.

It is an arithmetic number, because the mean of its divisors is an integer number (6954247).

Almost surely, 2^13908493 is an apocalyptic number.

It is an amenable number.

13908493 is a deficient number, since it is larger than the sum of its proper divisors (1).

13908493 is an equidigital number, since it uses as much as digits as its factorization.

13908493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 13908493 is about 3729.4092025413. The cubic root of 13908493 is about 240.4879712980.

The spelling of 13908493 in words is "thirteen million, nine hundred eight thousand, four hundred ninety-three".