107438809 has 4 divisors (see below), whose sum is σ = 107545060. Its totient is φ = 107332560.

The previous prime is 107438803. The next prime is 107438857. The reversal of 107438809 is 908834701.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87609600 + 19829209 = 9360^2 + 4453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-107438809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107438803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51594 + ... + 53635.

It is an arithmetic number, because the mean of its divisors is an integer number (26886265).

Almost surely, 2^107438809 is an apocalyptic number.

It is an amenable number.

107438809 is a deficient number, since it is larger than the sum of its proper divisors (106251).

107438809 is a wasteful number, since it uses less digits than its factorization.

107438809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106250.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 107438809 is about 10365.2693645655. The cubic root of 107438809 is about 475.3940353652.

The spelling of 107438809 in words is "one hundred seven million, four hundred thirty-eight thousand, eight hundred nine".