108609947 has 8 divisors (see below), whose sum is σ = 114435600. Its totient is φ = 102795264.

The previous prime is 108609937. The next prime is 108609961. The reversal of 108609947 is 749906801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 108609947 - 2¹⁰ = 108608923 is a prime.

It is a super-2 number, since 2×108609947² = 23592241174685618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 108609898 and 108609907.

It is not an unprimeable number, because it can be changed into a prime (108609937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24743 + ... + 28799.

It is an arithmetic number, because the mean of its divisors is an integer number (14304450).

Almost surely, 2^108609947 is an apocalyptic number.

108609947 is a deficient number, since it is larger than the sum of its proper divisors (5825653).

108609947 is a wasteful number, since it uses less digits than its factorization.

108609947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5485.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 108609947 is about 10421.6096165612. The cubic root of 108609947 is about 477.1151428704.

The spelling of 108609947 in words is "one hundred eight million, six hundred nine thousand, nine hundred forty-seven".