40740066949 has 2 divisors, whose sum is σ = 40740066950. Its totient is φ = 40740066948.

The previous prime is 40740066919. The next prime is 40740067033. The reversal of 40740066949 is 94966004704.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39732448900 + 1007618049 = 199330^2 + 31743^2 .

It is a cyclic number.

It is not a de Polignac number, because 40740066949 - 2⁷ = 40740066821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40740066919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20370033474 + 20370033475.

It is an arithmetic number, because the mean of its divisors is an integer number (20370033475).

Almost surely, 2^40740066949 is an apocalyptic number.

It is an amenable number.

40740066949 is a deficient number, since it is larger than the sum of its proper divisors (1).

40740066949 is an equidigital number, since it uses as much as digits as its factorization.

40740066949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 40740066949 in words is "forty billion, seven hundred forty million, sixty-six thousand, nine hundred forty-nine".