109899997 has 2 divisors, whose sum is σ = 109899998. Its totient is φ = 109899996.

The previous prime is 109899947. The next prime is 109900031. The reversal of 109899997 is 799998901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67010596 + 42889401 = 8186^2 + 6549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109899997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109899947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54949998 + 54949999.

It is an arithmetic number, because the mean of its divisors is an integer number (54949999).

Almost surely, 2^109899997 is an apocalyptic number.

It is an amenable number.

109899997 is a deficient number, since it is larger than the sum of its proper divisors (1).

109899997 is an equidigital number, since it uses as much as digits as its factorization.

109899997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3306744, while the sum is 61.

The square root of 109899997 is about 10483.3199416979. The cubic root of 109899997 is about 478.9967427861.

The spelling of 109899997 in words is "one hundred nine million, eight hundred ninety-nine thousand, nine hundred ninety-seven".