108649403 has 2 divisors, whose sum is σ = 108649404. Its totient is φ = 108649402.

The previous prime is 108649393. The next prime is 108649439. The reversal of 108649403 is 304946801.

It is a weak prime.

It is an emirp because it is prime and its reverse (304946801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108649403 - 2⁶ = 108649339 is a prime.

It is not a weakly prime, because it can be changed into another prime (108649103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54324701 + 54324702.

It is an arithmetic number, because the mean of its divisors is an integer number (54324702).

Almost surely, 2^108649403 is an apocalyptic number.

108649403 is a deficient number, since it is larger than the sum of its proper divisors (1).

108649403 is an equidigital number, since it uses as much as digits as its factorization.

108649403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 108649403 is about 10423.5024344027. The cubic root of 108649403 is about 477.1729115998.

The spelling of 108649403 in words is "one hundred eight million, six hundred forty-nine thousand, four hundred three".