109191934 has 4 divisors (see below), whose sum is σ = 163787904. Its totient is φ = 54595966.

The previous prime is 109191923. The next prime is 109191937. The reversal of 109191934 is 439191901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 439191901 = 67 ⋅6555103.

It is a junction number, because it is equal to n+sod(n) for n = 109191893 and 109191902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109191937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27297982 + ... + 27297985.

It is an arithmetic number, because the mean of its divisors is an integer number (40946976).

Almost surely, 2^109191934 is an apocalyptic number.

109191934 is a deficient number, since it is larger than the sum of its proper divisors (54595970).

109191934 is an equidigital number, since it uses as much as digits as its factorization.

109191934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54595969.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 109191934 is about 10449.4944375314. The cubic root of 109191934 is about 477.9658332400.

It can be divided in two parts, 1091 and 91934, that added together give a square (93025 = 305²).

The spelling of 109191934 in words is "one hundred nine million, one hundred ninety-one thousand, nine hundred thirty-four".