109877961 has 4 divisors (see below), whose sum is σ = 146503952. Its totient is φ = 73251972.

The previous prime is 109877959. The next prime is 109878017. The reversal of 109877961 is 169778901.

It is a happy number.

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 not a de Polignac number, because 109877961 - 2¹ = 109877959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109877961.

It is not an unprimeable number, because it can be changed into a prime (109877951) 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 3 ways as a sum of consecutive naturals, for example, 18312991 + ... + 18312996.

It is an arithmetic number, because the mean of its divisors is an integer number (36625988).

Almost surely, 2^109877961 is an apocalyptic number.

It is an amenable number.

109877961 is a deficient number, since it is larger than the sum of its proper divisors (36625991).

109877961 is an equidigital number, since it uses as much as digits as its factorization.

109877961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36625990.

The product of its (nonzero) digits is 190512, while the sum is 48.

The square root of 109877961 is about 10482.2688860761. The cubic root of 109877961 is about 478.9647261708.

The spelling of 109877961 in words is "one hundred nine million, eight hundred seventy-seven thousand, nine hundred sixty-one".