40924421 has 2 divisors, whose sum is σ = 40924422. Its totient is φ = 40924420.

The previous prime is 40924417. The next prime is 40924439. The reversal of 40924421 is 12442904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32433025 + 8491396 = 5695^2 + 2914^2 .

It is a cyclic number.

It is not a de Polignac number, because 40924421 - 2² = 40924417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40924621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20462210 + 20462211.

It is an arithmetic number, because the mean of its divisors is an integer number (20462211).

Almost surely, 2^40924421 is an apocalyptic number.

It is an amenable number.

40924421 is a deficient number, since it is larger than the sum of its proper divisors (1).

40924421 is an equidigital number, since it uses as much as digits as its factorization.

40924421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 40924421 is about 6397.2197867511. The cubic root of 40924421 is about 344.6097133781.

The spelling of 40924421 in words is "forty million, nine hundred twenty-four thousand, four hundred twenty-one".