40974991 has 2 divisors, whose sum is σ = 40974992. Its totient is φ = 40974990.

The previous prime is 40974979. The next prime is 40975003. The reversal of 40974991 is 19947904.

It is a balanced prime because it is at equal distance from previous prime (40974979) and next prime (40975003).

It is a cyclic number.

It is not a de Polignac number, because 40974991 - 2⁷ = 40974863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40974931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20487495 + 20487496.

It is an arithmetic number, because the mean of its divisors is an integer number (20487496).

Almost surely, 2^40974991 is an apocalyptic number.

40974991 is a deficient number, since it is larger than the sum of its proper divisors (1).

40974991 is an equidigital number, since it uses as much as digits as its factorization.

40974991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 40974991 is about 6401.1710647350. The cubic root of 40974991 is about 344.7515988310.

The spelling of 40974991 in words is "forty million, nine hundred seventy-four thousand, nine hundred ninety-one".