109902217 has 2 divisors, whose sum is σ = 109902218. Its totient is φ = 109902216.

The previous prime is 109902167. The next prime is 109902253. The reversal of 109902217 is 712209901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107723641 + 2178576 = 10379^2 + 1476^2 .

It is a cyclic number.

It is not a de Polignac number, because 109902217 - 2¹⁵ = 109869449 is a prime.

It is not a weakly prime, because it can be changed into another prime (109902917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54951108 + 54951109.

It is an arithmetic number, because the mean of its divisors is an integer number (54951109).

Almost surely, 2^109902217 is an apocalyptic number.

It is an amenable number.

109902217 is a deficient number, since it is larger than the sum of its proper divisors (1).

109902217 is an equidigital number, since it uses as much as digits as its factorization.

109902217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 109902217 is about 10483.4258236514. The cubic root of 109902217 is about 478.9999680383. Note that the first 4 decimals are identical.

The spelling of 109902217 in words is "one hundred nine million, nine hundred two thousand, two hundred seventeen".