40450549 has 2 divisors, whose sum is σ = 40450550. Its totient is φ = 40450548.

The previous prime is 40450523. The next prime is 40450561. The reversal of 40450549 is 94505404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38254225 + 2196324 = 6185^2 + 1482^2 .

It is a cyclic number.

It is not a de Polignac number, because 40450549 - 2⁹ = 40450037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40450549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40450519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20225274 + 20225275.

It is an arithmetic number, because the mean of its divisors is an integer number (20225275).

Almost surely, 2^40450549 is an apocalyptic number.

It is an amenable number.

40450549 is a deficient number, since it is larger than the sum of its proper divisors (1).

40450549 is an equidigital number, since it uses as much as digits as its factorization.

40450549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 40450549 is about 6360.0746064807. The cubic root of 40450549 is about 343.2744448178.

The spelling of 40450549 in words is "forty million, four hundred fifty thousand, five hundred forty-nine".