47018669 has 2 divisors, whose sum is σ = 47018670. Its totient is φ = 47018668.

The previous prime is 47018641. The next prime is 47018681. The reversal of 47018669 is 96681074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27772900 + 19245769 = 5270^2 + 4387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47018669 is a prime.

It is a super-2 number, since 2×47018669² = 4421510469063122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47018269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23509334 + 23509335.

It is an arithmetic number, because the mean of its divisors is an integer number (23509335).

Almost surely, 2^47018669 is an apocalyptic number.

It is an amenable number.

47018669 is a deficient number, since it is larger than the sum of its proper divisors (1).

47018669 is an equidigital number, since it uses as much as digits as its factorization.

47018669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 47018669 is about 6857.0160419821. The cubic root of 47018669 is about 360.9303840816.

The spelling of 47018669 in words is "forty-seven million, eighteen thousand, six hundred sixty-nine".