40647853 has 2 divisors, whose sum is σ = 40647854. Its totient is φ = 40647852.

The previous prime is 40647829. The next prime is 40647863. The reversal of 40647853 is 35874604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38900169 + 1747684 = 6237^2 + 1322^2 .

It is a cyclic number.

It is not a de Polignac number, because 40647853 - 2¹⁷ = 40516781 is a prime.

It is a nialpdrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40647823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20323926 + 20323927.

It is an arithmetic number, because the mean of its divisors is an integer number (20323927).

Almost surely, 2^40647853 is an apocalyptic number.

It is an amenable number.

40647853 is a deficient number, since it is larger than the sum of its proper divisors (1).

40647853 is an equidigital number, since it uses as much as digits as its factorization.

40647853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 40647853 is about 6375.5668767569. The cubic root of 40647853 is about 343.8316650931.

The spelling of 40647853 in words is "forty million, six hundred forty-seven thousand, eight hundred fifty-three".