40166047 has 2 divisors, whose sum is σ = 40166048. Its totient is φ = 40166046.

The previous prime is 40166033. The next prime is 40166081. The reversal of 40166047 is 74066104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40166047 - 2⁷ = 40165919 is a prime.

It is a super-2 number, since 2×40166047² = 3226622663212418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40167047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20083023 + 20083024.

It is an arithmetic number, because the mean of its divisors is an integer number (20083024).

Almost surely, 2^40166047 is an apocalyptic number.

40166047 is a deficient number, since it is larger than the sum of its proper divisors (1).

40166047 is an equidigital number, since it uses as much as digits as its factorization.

40166047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 40166047 is about 6337.6688932130. The cubic root of 40166047 is about 342.4677633182.

The spelling of 40166047 in words is "forty million, one hundred sixty-six thousand, forty-seven".