109351439 has 4 divisors (see below), whose sum is σ = 110138280. Its totient is φ = 108564600.

The previous prime is 109351427. The next prime is 109351447. The reversal of 109351439 is 934153901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934153901 = 23 ⋅40615387.

It is a cyclic number.

It is not a de Polignac number, because 109351439 - 2⁴ = 109351423 is a prime.

It is a super-2 number, since 2×109351439² = 23915474422741442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109351399 and 109351408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109357439) 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 in 3 ways as a sum of consecutive naturals, for example, 393212 + ... + 393489.

It is an arithmetic number, because the mean of its divisors is an integer number (27534570).

Almost surely, 2^109351439 is an apocalyptic number.

109351439 is a deficient number, since it is larger than the sum of its proper divisors (786841).

109351439 is an equidigital number, since it uses as much as digits as its factorization.

109351439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786840.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 109351439 is about 10457.1238397563. The cubic root of 109351439 is about 478.1984537439.

The spelling of 109351439 in words is "one hundred nine million, three hundred fifty-one thousand, four hundred thirty-nine".