109969381 has 4 divisors (see below), whose sum is σ = 110188512. Its totient is φ = 109750252.

The previous prime is 109969313. The next prime is 109969393. The reversal of 109969381 is 183969901.

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 a de Polignac number, because none of the positive numbers 2^k-109969381 is a prime.

It is a super-2 number, since 2×109969381² = 24186529515046322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109969081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108811 + ... + 109816.

It is an arithmetic number, because the mean of its divisors is an integer number (27547128).

Almost surely, 2^109969381 is an apocalyptic number.

It is an amenable number.

109969381 is a deficient number, since it is larger than the sum of its proper divisors (219131).

109969381 is an equidigital number, since it uses as much as digits as its factorization.

109969381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219130.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 109969381 is about 10486.6286765576. The cubic root of 109969381 is about 479.0975244641.

The spelling of 109969381 in words is "one hundred nine million, nine hundred sixty-nine thousand, three hundred eighty-one".