40208479 has 2 divisors, whose sum is σ = 40208480. Its totient is φ = 40208478.

The previous prime is 40208429. The next prime is 40208491. The reversal of 40208479 is 97480204.

It is a happy number.

40208479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40208479 - 2¹¹ = 40206431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40208429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20104239 + 20104240.

It is an arithmetic number, because the mean of its divisors is an integer number (20104240).

Almost surely, 2^40208479 is an apocalyptic number.

40208479 is a deficient number, since it is larger than the sum of its proper divisors (1).

40208479 is an equidigital number, since it uses as much as digits as its factorization.

40208479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 40208479 is about 6341.0156126602. The cubic root of 40208479 is about 342.5883168628.

The spelling of 40208479 in words is "forty million, two hundred eight thousand, four hundred seventy-nine".