41656991 has 2 divisors, whose sum is σ = 41656992. Its totient is φ = 41656990.

The previous prime is 41656913. The next prime is 41657023. The reversal of 41656991 is 19965614.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41656991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41676991) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20828495 + 20828496.

It is an arithmetic number, because the mean of its divisors is an integer number (20828496).

Almost surely, 2^41656991 is an apocalyptic number.

41656991 is a deficient number, since it is larger than the sum of its proper divisors (1).

41656991 is an equidigital number, since it uses as much as digits as its factorization.

41656991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 41.

The square root of 41656991 is about 6454.2227262467. Note that the first 3 decimals coincide. The cubic root of 41656991 is about 346.6538001676.

The spelling of 41656991 in words is "forty-one million, six hundred fifty-six thousand, nine hundred ninety-one".