41991497 has 2 divisors, whose sum is σ = 41991498. Its totient is φ = 41991496.

The previous prime is 41991461. The next prime is 41991533. The reversal of 41991497 is 79419914.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (41991461) and next prime (41991533).

It can be written as a sum of positive squares in only one way, i.e., 40589641 + 1401856 = 6371^2 + 1184^2 .

It is a cyclic number.

It is not a de Polignac number, because 41991497 - 2¹² = 41987401 is a prime.

It is not a weakly prime, because it can be changed into another prime (41991437) 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, 20995748 + 20995749.

It is an arithmetic number, because the mean of its divisors is an integer number (20995749).

Almost surely, 2^41991497 is an apocalyptic number.

It is an amenable number.

41991497 is a deficient number, since it is larger than the sum of its proper divisors (1).

41991497 is an equidigital number, since it uses as much as digits as its factorization.

41991497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 44.

The square root of 41991497 is about 6480.0846445089. The cubic root of 41991497 is about 347.5792052431.

The spelling of 41991497 in words is "forty-one million, nine hundred ninety-one thousand, four hundred ninety-seven".