1086173947 has 4 divisors (see below), whose sum is σ = 1087012696. Its totient is φ = 1085335200.

The previous prime is 1086173909. The next prime is 1086173971. The reversal of 1086173947 is 7493716801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7493716801 = 47 ⋅159440783.

It is a cyclic number.

It is not a de Polignac number, because 1086173947 - 2¹¹ = 1086171899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1086173897 and 1086173906.

It is not an unprimeable number, because it can be changed into a prime (1086573947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417429 + ... + 420022.

It is an arithmetic number, because the mean of its divisors is an integer number (271753174).

Almost surely, 2^1086173947 is an apocalyptic number.

1086173947 is a deficient number, since it is larger than the sum of its proper divisors (838749).

1086173947 is an equidigital number, since it uses as much as digits as its factorization.

1086173947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838748.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 1086173947 is about 32957.1531992677. The cubic root of 1086173947 is about 1027.9369100734.

The spelling of 1086173947 in words is "one billion, eighty-six million, one hundred seventy-three thousand, nine hundred forty-seven".