109993817 has 2 divisors, whose sum is σ = 109993818. Its totient is φ = 109993816.

The previous prime is 109993813. The next prime is 109993823. The reversal of 109993817 is 718399901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75759616 + 34234201 = 8704^2 + 5851^2 .

It is a cyclic number.

It is not a de Polignac number, because 109993817 - 2² = 109993813 is a prime.

It is not a weakly prime, because it can be changed into another prime (109993813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54996908 + 54996909.

It is an arithmetic number, because the mean of its divisors is an integer number (54996909).

Almost surely, 2^109993817 is an apocalyptic number.

It is an amenable number.

109993817 is a deficient number, since it is larger than the sum of its proper divisors (1).

109993817 is an equidigital number, since it uses as much as digits as its factorization.

109993817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 109993817 is about 10487.7937145998. The cubic root of 109993817 is about 479.1330081596.

The spelling of 109993817 in words is "one hundred nine million, nine hundred ninety-three thousand, eight hundred seventeen".