108999747 has 12 divisors (see below), whose sum is σ = 160415424. Its totient is φ = 71295120.

The previous prime is 108999703. The next prime is 108999757. The reversal of 108999747 is 747999801.

It is not a de Polignac number, because 108999747 - 2¹⁰ = 108998723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 108999693 and 108999702.

It is not an unprimeable number, because it can be changed into a prime (108999757) 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, 113779 + ... + 114732.

It is an arithmetic number, because the mean of its divisors is an integer number (13367952).

Almost surely, 2^108999747 is an apocalyptic number.

108999747 is a deficient number, since it is larger than the sum of its proper divisors (51415677).

108999747 is a wasteful number, since it uses less digits than its factorization.

108999747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228570 (or 228567 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The square root of 108999747 is about 10440.2943924010. The cubic root of 108999747 is about 477.6852485177.

Adding to 108999747 its sum of digits (54), we get a palindrome (108999801).

It can be divided in two parts, 108999 and 747, that added together give a triangular number (109746 = T₄₆₈).

The spelling of 108999747 in words is "one hundred eight million, nine hundred ninety-nine thousand, seven hundred forty-seven".