109594921 has 2 divisors, whose sum is σ = 109594922. Its totient is φ = 109594920.

The previous prime is 109594909. The next prime is 109594997. The reversal of 109594921 is 129495901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92256025 + 17338896 = 9605^2 + 4164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109594921 is a prime.

It is a super-2 number, since 2×109594921² = 24022093417992482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (109594621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54797460 + 54797461.

It is an arithmetic number, because the mean of its divisors is an integer number (54797461).

Almost surely, 2^109594921 is an apocalyptic number.

It is an amenable number.

109594921 is a deficient number, since it is larger than the sum of its proper divisors (1).

109594921 is an equidigital number, since it uses as much as digits as its factorization.

109594921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 109594921 is about 10468.7592865630. The cubic root of 109594921 is about 478.5531096659.

The spelling of 109594921 in words is "one hundred nine million, five hundred ninety-four thousand, nine hundred twenty-one".