109938457 has 2 divisors, whose sum is σ = 109938458. Its totient is φ = 109938456.

The previous prime is 109938421. The next prime is 109938461. The reversal of 109938457 is 754839901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107661376 + 2277081 = 10376^2 + 1509^2 .

It is an emirp because it is prime and its reverse (754839901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109938457 - 2⁷ = 109938329 is a prime.

It is not a weakly prime, because it can be changed into another prime (109938557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54969228 + 54969229.

It is an arithmetic number, because the mean of its divisors is an integer number (54969229).

Almost surely, 2^109938457 is an apocalyptic number.

It is an amenable number.

109938457 is a deficient number, since it is larger than the sum of its proper divisors (1).

109938457 is an equidigital number, since it uses as much as digits as its factorization.

109938457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 109938457 is about 10485.1541238076. The cubic root of 109938457 is about 479.0526119601.

The spelling of 109938457 in words is "one hundred nine million, nine hundred thirty-eight thousand, four hundred fifty-seven".