107920209 has 32 divisors (see below), whose sum is σ = 159160320. Its totient is φ = 64741248.

The previous prime is 107920201. The next prime is 107920229. The reversal of 107920209 is 902029701.

It is not a de Polignac number, because 107920209 - 2³ = 107920201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (107920201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344637 + ... + 344949.

It is an arithmetic number, because the mean of its divisors is an integer number (4973760).

Almost surely, 2^107920209 is an apocalyptic number.

107920209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

107920209 is a deficient number, since it is larger than the sum of its proper divisors (51240111).

107920209 is a wasteful number, since it uses less digits than its factorization.

107920209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 107920209 is about 10388.4651898151. The cubic root of 107920209 is about 476.1030086251.

The spelling of 107920209 in words is "one hundred seven million, nine hundred twenty thousand, two hundred nine".