109207863 has 12 divisors (see below), whose sum is σ = 159193320. Its totient is φ = 72136656.

The previous prime is 109207859. The next prime is 109207867. The reversal of 109207863 is 368702901.

It is an interprime number because it is at equal distance from previous prime (109207859) and next prime (109207867).

It is not a de Polignac number, because 109207863 - 2² = 109207859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109207867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54681 + ... + 56642.

It is an arithmetic number, because the mean of its divisors is an integer number (13266110).

Almost surely, 2^109207863 is an apocalyptic number.

109207863 is a deficient number, since it is larger than the sum of its proper divisors (49985457).

109207863 is a wasteful number, since it uses less digits than its factorization.

109207863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111438 (or 111435 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 109207863 is about 10450.2565997204. The cubic root of 109207863 is about 477.9890741129.

It can be divided in two parts, 10920 and 7863, that multiplied together give a triangular number (85863960 = T₁₃₁₀₄).

The spelling of 109207863 in words is "one hundred nine million, two hundred seven thousand, eight hundred sixty-three".