109977169 has 3 divisors (see below), whose sum is σ = 109987657. Its totient is φ = 109966682.

The previous prime is 109977163. The next prime is 109977221. The reversal of 109977169 is 961779901.

It is a happy number.

The square root of 109977169 is 10487.

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 109977169 - 2⁷ = 109977041 is a prime.

It is a super-2 number, since 2×109977169² = 24189955402509122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109977163) 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 in 2 ways as a sum of consecutive naturals, for example, 5244 + ... + 15730.

Almost surely, 2^109977169 is an apocalyptic number.

109977169 is the 10487-th square number.

109977169 is the 5244-th centered octagonal number.

It is an amenable number.

109977169 is a deficient number, since it is larger than the sum of its proper divisors (10488).

109977169 is an frugal number, since it uses more digits than its factorization.

109977169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20974 (or 10487 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 49.

The cubic root of 109977169 is about 479.1088340469.

Multiplying 109977169 by its sum of digits (49), we get a square (5388881281 = 73409²).

The spelling of 109977169 in words is "one hundred nine million, nine hundred seventy-seven thousand, one hundred sixty-nine".