40947541 has 2 divisors, whose sum is σ = 40947542. Its totient is φ = 40947540.

The previous prime is 40947499. The next prime is 40947563. The reversal of 40947541 is 14574904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40640625 + 306916 = 6375^2 + 554^2 .

It is a cyclic number.

It is not a de Polignac number, because 40947541 - 2⁹ = 40947029 is a prime.

It is a super-2 number, since 2×40947541² = 3353402227893362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40947497 and 40947506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40947581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20473770 + 20473771.

It is an arithmetic number, because the mean of its divisors is an integer number (20473771).

Almost surely, 2^40947541 is an apocalyptic number.

It is an amenable number.

40947541 is a deficient number, since it is larger than the sum of its proper divisors (1).

40947541 is an equidigital number, since it uses as much as digits as its factorization.

40947541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 40947541 is about 6399.0265665959. The cubic root of 40947541 is about 344.6745962074.

The spelling of 40947541 in words is "forty million, nine hundred forty-seven thousand, five hundred forty-one".