40840741 has 2 divisors, whose sum is σ = 40840742. Its totient is φ = 40840740.

The previous prime is 40840727. The next prime is 40840753. The reversal of 40840741 is 14704804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37564641 + 3276100 = 6129^2 + 1810^2 .

It is a cyclic number.

It is not a de Polignac number, because 40840741 - 2¹⁹ = 40316453 is a prime.

It is a super-2 number, since 2×40840741² = 3335932250858162, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40840771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20420370 + 20420371.

It is an arithmetic number, because the mean of its divisors is an integer number (20420371).

Almost surely, 2^40840741 is an apocalyptic number.

It is an amenable number.

40840741 is a deficient number, since it is larger than the sum of its proper divisors (1).

40840741 is an equidigital number, since it uses as much as digits as its factorization.

40840741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 40840741 is about 6390.6760988177. The cubic root of 40840741 is about 344.3746734582.

The spelling of 40840741 in words is "forty million, eight hundred forty thousand, seven hundred forty-one".