40418459 has 2 divisors, whose sum is σ = 40418460. Its totient is φ = 40418458.

The previous prime is 40418423. The next prime is 40418461. The reversal of 40418459 is 95481404.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40418459 is a prime.

Together with 40418461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40418419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20209229 + 20209230.

It is an arithmetic number, because the mean of its divisors is an integer number (20209230).

Almost surely, 2^40418459 is an apocalyptic number.

40418459 is a deficient number, since it is larger than the sum of its proper divisors (1).

40418459 is an equidigital number, since it uses as much as digits as its factorization.

40418459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 40418459 is about 6357.5513367963. The cubic root of 40418459 is about 343.1836459579.

The spelling of 40418459 in words is "forty million, four hundred eighteen thousand, four hundred fifty-nine".