164040047 has 2 divisors, whose sum is σ = 164040048. Its totient is φ = 164040046.

The previous prime is 164040031. The next prime is 164040077. The reversal of 164040047 is 740040461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164040047 - 2⁴ = 164040031 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 164039998 and 164040025.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164040077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82020023 + 82020024.

It is an arithmetic number, because the mean of its divisors is an integer number (82020024).

Almost surely, 2^164040047 is an apocalyptic number.

164040047 is a deficient number, since it is larger than the sum of its proper divisors (1).

164040047 is an equidigital number, since it uses as much as digits as its factorization.

164040047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 164040047 is about 12807.8119520861. The cubic root of 164040047 is about 547.4149177991.

The spelling of 164040047 in words is "one hundred sixty-four million, forty thousand, forty-seven".