109239247 has 8 divisors (see below), whose sum is σ = 118684944. Its totient is φ = 99942528.

The previous prime is 109239241. The next prime is 109239253. The reversal of 109239247 is 742932901.

It is an interprime number because it is at equal distance from previous prime (109239241) and next prime (109239253).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109239247 - 2¹⁵ = 109206479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109239241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35713 + ... + 38650.

It is an arithmetic number, because the mean of its divisors is an integer number (14835618).

Almost surely, 2^109239247 is an apocalyptic number.

109239247 is a deficient number, since it is larger than the sum of its proper divisors (9445697).

109239247 is a wasteful number, since it uses less digits than its factorization.

109239247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74489.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 109239247 is about 10451.7580817774. The cubic root of 109239247 is about 478.0348576670.

The spelling of 109239247 in words is "one hundred nine million, two hundred thirty-nine thousand, two hundred forty-seven".