109720947 has 24 divisors (see below), whose sum is σ = 174787536. Its totient is φ = 61000128.

The previous prime is 109720931. The next prime is 109720973. The reversal of 109720947 is 749027901.

It is not a de Polignac number, because 109720947 - 2⁴ = 109720931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109720987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4648 + ... + 15525.

It is an arithmetic number, because the mean of its divisors is an integer number (7282814).

Almost surely, 2^109720947 is an apocalyptic number.

109720947 is a deficient number, since it is larger than the sum of its proper divisors (65066589).

109720947 is a wasteful number, since it uses less digits than its factorization.

109720947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20227 (or 20220 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 109720947 is about 10474.7767040639. The cubic root of 109720947 is about 478.7364728821.

The spelling of 109720947 in words is "one hundred nine million, seven hundred twenty thousand, nine hundred forty-seven".