109920439 has 2 divisors, whose sum is σ = 109920440. Its totient is φ = 109920438.

The previous prime is 109920431. The next prime is 109920457. The reversal of 109920439 is 934029901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109920439 - 2³ = 109920431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109920398 and 109920407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109920431) 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, 54960219 + 54960220.

It is an arithmetic number, because the mean of its divisors is an integer number (54960220).

Almost surely, 2^109920439 is an apocalyptic number.

109920439 is a deficient number, since it is larger than the sum of its proper divisors (1).

109920439 is an equidigital number, since it uses as much as digits as its factorization.

109920439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 109920439 is about 10484.2948737624. The cubic root of 109920439 is about 479.0264396155.

The spelling of 109920439 in words is "one hundred nine million, nine hundred twenty thousand, four hundred thirty-nine".