109167997 has 2 divisors, whose sum is σ = 109167998. Its totient is φ = 109167996.

The previous prime is 109167973. The next prime is 109168043. The reversal of 109167997 is 799761901.

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., 74287161 + 34880836 = 8619^2 + 5906^2 .

It is a cyclic number.

It is not a de Polignac number, because 109167997 - 2⁷ = 109167869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109167997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109167907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54583998 + 54583999.

It is an arithmetic number, because the mean of its divisors is an integer number (54583999).

Almost surely, 2^109167997 is an apocalyptic number.

It is an amenable number.

109167997 is a deficient number, since it is larger than the sum of its proper divisors (1).

109167997 is an equidigital number, since it uses as much as digits as its factorization.

109167997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 214326, while the sum is 49.

The square root of 109167997 is about 10448.3490083362. The cubic root of 109167997 is about 477.9309042122.

The spelling of 109167997 in words is "one hundred nine million, one hundred sixty-seven thousand, nine hundred ninety-seven".