170940047 has 4 divisors (see below), whose sum is σ = 170986296. Its totient is φ = 170893800.

The previous prime is 170940043. The next prime is 170940059. The reversal of 170940047 is 740049071.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 170940047 - 2² = 170940043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 170939995 and 170940022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170940041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17048 + ... + 25149.

It is an arithmetic number, because the mean of its divisors is an integer number (42746574).

Almost surely, 2^170940047 is an apocalyptic number.

170940047 is a deficient number, since it is larger than the sum of its proper divisors (46249).

170940047 is an equidigital number, since it uses as much as digits as its factorization.

170940047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46248.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 170940047 is about 13074.4042694113. The cubic root of 170940047 is about 554.9850354432.

The spelling of 170940047 in words is "one hundred seventy million, nine hundred forty thousand, forty-seven".