109920403 has 2 divisors, whose sum is σ = 109920404. Its totient is φ = 109920402.

The previous prime is 109920361. The next prime is 109920431. The reversal of 109920403 is 304029901.

It is a happy number.

It is an a-pointer prime, because the next prime (109920431) can be obtained adding 109920403 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109920403 is a prime.

It is not a weakly prime, because it can be changed into another prime (109920103) 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, 54960201 + 54960202.

It is an arithmetic number, because the mean of its divisors is an integer number (54960202).

Almost surely, 2^109920403 is an apocalyptic number.

109920403 is a deficient number, since it is larger than the sum of its proper divisors (1).

109920403 is an equidigital number, since it uses as much as digits as its factorization.

109920403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 109920403 is about 10484.2931569086. The cubic root of 109920403 is about 479.0263873202.

The spelling of 109920403 in words is "one hundred nine million, nine hundred twenty thousand, four hundred three".