40661459 has 2 divisors, whose sum is σ = 40661460. Its totient is φ = 40661458.

The previous prime is 40661449. The next prime is 40661473. The reversal of 40661459 is 95416604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40661459 - 2²⁴ = 23884243 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40661449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20330729 + 20330730.

It is an arithmetic number, because the mean of its divisors is an integer number (20330730).

Almost surely, 2^40661459 is an apocalyptic number.

40661459 is a deficient number, since it is larger than the sum of its proper divisors (1).

40661459 is an equidigital number, since it uses as much as digits as its factorization.

40661459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 40661459 is about 6376.6338298510. The cubic root of 40661459 is about 343.8700242471.

The spelling of 40661459 in words is "forty million, six hundred sixty-one thousand, four hundred fifty-nine".