109899947 has 2 divisors, whose sum is σ = 109899948. Its totient is φ = 109899946.

The previous prime is 109899941. The next prime is 109899997. The reversal of 109899947 is 749998901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109899947 - 2⁴ = 109899931 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 109899892 and 109899901.

It is not a weakly prime, because it can be changed into another prime (109899941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54949973 + 54949974.

It is an arithmetic number, because the mean of its divisors is an integer number (54949974).

Almost surely, 2^109899947 is an apocalyptic number.

109899947 is a deficient number, since it is larger than the sum of its proper divisors (1).

109899947 is an equidigital number, since it uses as much as digits as its factorization.

109899947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The square root of 109899947 is about 10483.3175569569. The cubic root of 109899947 is about 478.9966701448.

The spelling of 109899947 in words is "one hundred nine million, eight hundred ninety-nine thousand, nine hundred forty-seven".