109239469 has 2 divisors, whose sum is σ = 109239470. Its totient is φ = 109239468.

The previous prime is 109239461. The next prime is 109239497. The reversal of 109239469 is 964932901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75168900 + 34070569 = 8670^2 + 5837^2 .

It is a cyclic number.

It is not a de Polignac number, because 109239469 - 2³ = 109239461 is a prime.

It is a super-2 number, since 2×109239469² = 23866523174803922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109239461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54619734 + 54619735.

It is an arithmetic number, because the mean of its divisors is an integer number (54619735).

Almost surely, 2^109239469 is an apocalyptic number.

It is an amenable number.

109239469 is a deficient number, since it is larger than the sum of its proper divisors (1).

109239469 is an equidigital number, since it uses as much as digits as its factorization.

109239469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 109239469 is about 10451.7687019949. The cubic root of 109239469 is about 478.0351814934.

The spelling of 109239469 in words is "one hundred nine million, two hundred thirty-nine thousand, four hundred sixty-nine".