109275391 has 4 divisors (see below), whose sum is σ = 109329984. Its totient is φ = 109220800.

The previous prime is 109275389. The next prime is 109275433. The reversal of 109275391 is 193572901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193572901 = 467 ⋅414503.

It is a cyclic number.

It is not a de Polignac number, because 109275391 - 2¹ = 109275389 is a prime.

It is a super-2 number, since 2×109275391² = 23882222156405762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109275391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109275301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24175 + ... + 28336.

It is an arithmetic number, because the mean of its divisors is an integer number (27332496).

Almost surely, 2^109275391 is an apocalyptic number.

109275391 is a deficient number, since it is larger than the sum of its proper divisors (54593).

109275391 is an equidigital number, since it uses as much as digits as its factorization.

109275391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54592.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 109275391 is about 10453.4870258684. The cubic root of 109275391 is about 478.0875743329.

The spelling of 109275391 in words is "one hundred nine million, two hundred seventy-five thousand, three hundred ninety-one".