109499442649 has 3 divisors (see below), whose sum is σ = 109499773557. Its totient is φ = 109499111742.

The previous prime is 109499442643. The next prime is 109499442653. The reversal of 109499442649 is 946244994901.

The square root of 109499442649 is 330907.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 109499442649 - 2¹⁵ = 109499409881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109499442643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 165454 + ... + 496360.

It is an arithmetic number, because the mean of its divisors is an integer number (36499924519).

Almost surely, 2^109499442649 is an apocalyptic number.

109499442649 is the 330907-th square number.

109499442649 is the 165454-th centered octagonal number.

It is an amenable number.

109499442649 is a deficient number, since it is larger than the sum of its proper divisors (330908).

109499442649 is an frugal number, since it uses more digits than its factorization.

109499442649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661814 (or 330907 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 61.

The spelling of 109499442649 in words is "one hundred nine billion, four hundred ninety-nine million, four hundred forty-two thousand, six hundred forty-nine".