109591249 has 4 divisors (see below), whose sum is σ = 110978560. Its totient is φ = 108203940.

The previous prime is 109591247. The next prime is 109591271. The reversal of 109591249 is 942195901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 109591249 - 2¹ = 109591247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109591247) 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, 693537 + ... + 693694.

It is an arithmetic number, because the mean of its divisors is an integer number (27744640).

Almost surely, 2^109591249 is an apocalyptic number.

It is an amenable number.

109591249 is a deficient number, since it is larger than the sum of its proper divisors (1387311).

109591249 is an equidigital number, since it uses as much as digits as its factorization.

109591249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387310.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 109591249 is about 10468.5839061451. The cubic root of 109591249 is about 478.5477649333.

The spelling of 109591249 in words is "one hundred nine million, five hundred ninety-one thousand, two hundred forty-nine".