107639729 has 4 divisors (see below), whose sum is σ = 109929984. Its totient is φ = 105349476.

The previous prime is 107639711. The next prime is 107639743. The reversal of 107639729 is 927936701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-107639729 is a prime.

It is a super-2 number, since 2×107639729² = 23172622518386882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 107639729.

It is not an unprimeable number, because it can be changed into a prime (107639759) 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, 1145057 + ... + 1145150.

It is an arithmetic number, because the mean of its divisors is an integer number (27482496).

Almost surely, 2^107639729 is an apocalyptic number.

It is an amenable number.

107639729 is a deficient number, since it is larger than the sum of its proper divisors (2290255).

107639729 is an equidigital number, since it uses as much as digits as its factorization.

107639729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290254.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 107639729 is about 10374.9568191872. The cubic root of 107639729 is about 475.6901936809.

The spelling of 107639729 in words is "one hundred seven million, six hundred thirty-nine thousand, seven hundred twenty-nine".