40912621 has 2 divisors, whose sum is σ = 40912622. Its totient is φ = 40912620.

The previous prime is 40912603. The next prime is 40912637. The reversal of 40912621 is 12621904.

40912621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33698025 + 7214596 = 5805^2 + 2686^2 .

It is a cyclic number.

It is not a de Polignac number, because 40912621 - 2⁵ = 40912589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40912021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20456310 + 20456311.

It is an arithmetic number, because the mean of its divisors is an integer number (20456311).

Almost surely, 2^40912621 is an apocalyptic number.

It is an amenable number.

40912621 is a deficient number, since it is larger than the sum of its proper divisors (1).

40912621 is an equidigital number, since it uses as much as digits as its factorization.

40912621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 40912621 is about 6396.2974446159. The cubic root of 40912621 is about 344.5765890201.

The spelling of 40912621 in words is "forty million, nine hundred twelve thousand, six hundred twenty-one".