40056479 has 2 divisors, whose sum is σ = 40056480. Its totient is φ = 40056478.

The previous prime is 40056473. The next prime is 40056481. The reversal of 40056479 is 97465004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40056479 - 2⁴ = 40056463 is a prime.

Together with 40056481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40056473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20028239 + 20028240.

It is an arithmetic number, because the mean of its divisors is an integer number (20028240).

Almost surely, 2^40056479 is an apocalyptic number.

40056479 is a deficient number, since it is larger than the sum of its proper divisors (1).

40056479 is an equidigital number, since it uses as much as digits as its factorization.

40056479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 40056479 is about 6329.0188023105. The cubic root of 40056479 is about 342.1560765220.

The spelling of 40056479 in words is "forty million, fifty-six thousand, four hundred seventy-nine".