109759921 has 2 divisors, whose sum is σ = 109759922. Its totient is φ = 109759920.

The previous prime is 109759913. The next prime is 109759927. The reversal of 109759921 is 129957901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59845696 + 49914225 = 7736^2 + 7065^2 .

It is a cyclic number.

It is not a de Polignac number, because 109759921 - 2³ = 109759913 is a prime.

It is not a weakly prime, because it can be changed into another prime (109759927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54879960 + 54879961.

It is an arithmetic number, because the mean of its divisors is an integer number (54879961).

Almost surely, 2^109759921 is an apocalyptic number.

It is an amenable number.

109759921 is a deficient number, since it is larger than the sum of its proper divisors (1).

109759921 is an equidigital number, since it uses as much as digits as its factorization.

109759921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 43.

The square root of 109759921 is about 10476.6369126738. The cubic root of 109759921 is about 478.7931501986.

The spelling of 109759921 in words is "one hundred nine million, seven hundred fifty-nine thousand, nine hundred twenty-one".