40213447 has 2 divisors, whose sum is σ = 40213448. Its totient is φ = 40213446.

The previous prime is 40213441. The next prime is 40213469. The reversal of 40213447 is 74431204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40213447 - 2⁷ = 40213319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40213441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20106723 + 20106724.

It is an arithmetic number, because the mean of its divisors is an integer number (20106724).

Almost surely, 2^40213447 is an apocalyptic number.

40213447 is a deficient number, since it is larger than the sum of its proper divisors (1).

40213447 is an equidigital number, since it uses as much as digits as its factorization.

40213447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 40213447 is about 6341.4073359153. The cubic root of 40213447 is about 342.6024258990.

The spelling of 40213447 in words is "forty million, two hundred thirteen thousand, four hundred forty-seven".