40974809 has 2 divisors, whose sum is σ = 40974810. Its totient is φ = 40974808.

The previous prime is 40974793. The next prime is 40974823. The reversal of 40974809 is 90847904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40043584 + 931225 = 6328^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 40974809 - 2⁴ = 40974793 is a prime.

It is not a weakly prime, because it can be changed into another prime (40974889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20487404 + 20487405.

It is an arithmetic number, because the mean of its divisors is an integer number (20487405).

Almost surely, 2^40974809 is an apocalyptic number.

It is an amenable number.

40974809 is a deficient number, since it is larger than the sum of its proper divisors (1).

40974809 is an equidigital number, since it uses as much as digits as its factorization.

40974809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 40974809 is about 6401.1568485704. The cubic root of 40974809 is about 344.7510883986.

The spelling of 40974809 in words is "forty million, nine hundred seventy-four thousand, eight hundred nine".