40493149 has 2 divisors, whose sum is σ = 40493150. Its totient is φ = 40493148.

The previous prime is 40493147. The next prime is 40493191. The reversal of 40493149 is 94139404.

40493149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38068900 + 2424249 = 6170^2 + 1557^2 .

It is a cyclic number.

It is not a de Polignac number, because 40493149 - 2¹ = 40493147 is a prime.

Together with 40493147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40493147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20246574 + 20246575.

It is an arithmetic number, because the mean of its divisors is an integer number (20246575).

Almost surely, 2^40493149 is an apocalyptic number.

It is an amenable number.

40493149 is a deficient number, since it is larger than the sum of its proper divisors (1).

40493149 is an equidigital number, since it uses as much as digits as its factorization.

40493149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 40493149 is about 6363.4227425184. The cubic root of 40493149 is about 343.3949076314.

The spelling of 40493149 in words is "forty million, four hundred ninety-three thousand, one hundred forty-nine".