40814651 has 2 divisors, whose sum is σ = 40814652. Its totient is φ = 40814650.

The previous prime is 40814623. The next prime is 40814681. The reversal of 40814651 is 15641804.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40814651 is a prime.

It is not a weakly prime, because it can be changed into another prime (40814621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20407325 + 20407326.

It is an arithmetic number, because the mean of its divisors is an integer number (20407326).

Almost surely, 2^40814651 is an apocalyptic number.

40814651 is a deficient number, since it is larger than the sum of its proper divisors (1).

40814651 is an equidigital number, since it uses as much as digits as its factorization.

40814651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 40814651 is about 6388.6345176415. The cubic root of 40814651 is about 344.3013263632.

The spelling of 40814651 in words is "forty million, eight hundred fourteen thousand, six hundred fifty-one".