40549423 has 2 divisors, whose sum is σ = 40549424. Its totient is φ = 40549422.

The previous prime is 40549381. The next prime is 40549433. The reversal of 40549423 is 32494504.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40549423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40549433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20274711 + 20274712.

It is an arithmetic number, because the mean of its divisors is an integer number (20274712).

Almost surely, 2^40549423 is an apocalyptic number.

40549423 is a deficient number, since it is larger than the sum of its proper divisors (1).

40549423 is an equidigital number, since it uses as much as digits as its factorization.

40549423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 40549423 is about 6367.8428843683. The cubic root of 40549423 is about 343.5539078630.

The spelling of 40549423 in words is "forty million, five hundred forty-nine thousand, four hundred twenty-three".