40794557 has 2 divisors, whose sum is σ = 40794558. Its totient is φ = 40794556.

The previous prime is 40794553. The next prime is 40794587. The reversal of 40794557 is 75549704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31967716 + 8826841 = 5654^2 + 2971^2 .

It is a cyclic number.

It is not a de Polignac number, because 40794557 - 2² = 40794553 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40794553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20397278 + 20397279.

It is an arithmetic number, because the mean of its divisors is an integer number (20397279).

Almost surely, 2^40794557 is an apocalyptic number.

It is an amenable number.

40794557 is a deficient number, since it is larger than the sum of its proper divisors (1).

40794557 is an equidigital number, since it uses as much as digits as its factorization.

40794557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 40794557 is about 6387.0616875055. The cubic root of 40794557 is about 344.2448145767.

The spelling of 40794557 in words is "forty million, seven hundred ninety-four thousand, five hundred fifty-seven".