109943257 has 2 divisors, whose sum is σ = 109943258. Its totient is φ = 109943256.

The previous prime is 109943221. The next prime is 109943261. The reversal of 109943257 is 752349901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87815641 + 22127616 = 9371^2 + 4704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109943257 is a prime.

It is not a weakly prime, because it can be changed into another prime (109943357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54971628 + 54971629.

It is an arithmetic number, because the mean of its divisors is an integer number (54971629).

Almost surely, 2^109943257 is an apocalyptic number.

It is an amenable number.

109943257 is a deficient number, since it is larger than the sum of its proper divisors (1).

109943257 is an equidigital number, since it uses as much as digits as its factorization.

109943257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 109943257 is about 10485.3830163709. The cubic root of 109943257 is about 479.0595837973.

The spelling of 109943257 in words is "one hundred nine million, nine hundred forty-three thousand, two hundred fifty-seven".