40346479 has 2 divisors, whose sum is σ = 40346480. Its totient is φ = 40346478.

The previous prime is 40346477. The next prime is 40346497. The reversal of 40346479 is 97464304.

Together with next prime (40346497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40346479 - 2¹ = 40346477 is a prime.

Together with 40346477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40346473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20173239 + 20173240.

It is an arithmetic number, because the mean of its divisors is an integer number (20173240).

Almost surely, 2^40346479 is an apocalyptic number.

40346479 is a deficient number, since it is larger than the sum of its proper divisors (1).

40346479 is an equidigital number, since it uses as much as digits as its factorization.

40346479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 40346479 is about 6351.8878296141. The cubic root of 40346479 is about 342.9798031440.

The spelling of 40346479 in words is "forty million, three hundred forty-six thousand, four hundred seventy-nine".