40074649 has 2 divisors, whose sum is σ = 40074650. Its totient is φ = 40074648.

The previous prime is 40074571. The next prime is 40074701. The reversal of 40074649 is 94647004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21455424 + 18619225 = 4632^2 + 4315^2 .

It is a cyclic number.

It is not a de Polignac number, because 40074649 - 2⁷ = 40074521 is a prime.

It is not a weakly prime, because it can be changed into another prime (40074149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20037324 + 20037325.

It is an arithmetic number, because the mean of its divisors is an integer number (20037325).

Almost surely, 2^40074649 is an apocalyptic number.

It is an amenable number.

40074649 is a deficient number, since it is larger than the sum of its proper divisors (1).

40074649 is an equidigital number, since it uses as much as digits as its factorization.

40074649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 40074649 is about 6330.4540911375. The cubic root of 40074649 is about 342.2078037854.

The spelling of 40074649 in words is "forty million, seventy-four thousand, six hundred forty-nine".