40664093 has 2 divisors, whose sum is σ = 40664094. Its totient is φ = 40664092.

The previous prime is 40664089. The next prime is 40664101. The reversal of 40664093 is 39046604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38464804 + 2199289 = 6202^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 40664093 - 2² = 40664089 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40664053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20332046 + 20332047.

It is an arithmetic number, because the mean of its divisors is an integer number (20332047).

Almost surely, 2^40664093 is an apocalyptic number.

It is an amenable number.

40664093 is a deficient number, since it is larger than the sum of its proper divisors (1).

40664093 is an equidigital number, since it uses as much as digits as its factorization.

40664093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 40664093 is about 6376.8403618093. The cubic root of 40664093 is about 343.8774492478.

The spelling of 40664093 in words is "forty million, six hundred sixty-four thousand, ninety-three".