168999047 has 8 divisors (see below), whose sum is σ = 193447296. Its totient is φ = 144627192.

The previous prime is 168999043. The next prime is 168999059. The reversal of 168999047 is 740999861.

It is a happy number.

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 168999047 - 2² = 168999043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168999047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168999043) 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, 14273 + ... + 23274.

It is an arithmetic number, because the mean of its divisors is an integer number (24180912).

Almost surely, 2^168999047 is an apocalyptic number.

168999047 is a deficient number, since it is larger than the sum of its proper divisors (24448249).

168999047 is an equidigital number, since it uses as much as digits as its factorization.

168999047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38197.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 168999047 is about 12999.9633461022. The cubic root of 168999047 is about 552.8764421307.

The spelling of 168999047 in words is "one hundred sixty-eight million, nine hundred ninety-nine thousand, forty-seven".