40004851 has 2 divisors, whose sum is σ = 40004852. Its totient is φ = 40004850.

The previous prime is 40004827. The next prime is 40004857. The reversal of 40004851 is 15840004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40004851 - 2¹³ = 39996659 is a prime.

It is not a weakly prime, because it can be changed into another prime (40004857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20002425 + 20002426.

It is an arithmetic number, because the mean of its divisors is an integer number (20002426).

Almost surely, 2^40004851 is an apocalyptic number.

40004851 is a deficient number, since it is larger than the sum of its proper divisors (1).

40004851 is an equidigital number, since it uses as much as digits as its factorization.

40004851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 40004851 is about 6324.9388139333. The cubic root of 40004851 is about 342.0090139320.

Adding to 40004851 its reverse (15840004), we get a palindrome (55844855).

The spelling of 40004851 in words is "forty million, four thousand, eight hundred fifty-one".