40471579 has 2 divisors, whose sum is σ = 40471580. Its totient is φ = 40471578.

The previous prime is 40471567. The next prime is 40471583. The reversal of 40471579 is 97517404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40471579 is a prime.

It is not a weakly prime, because it can be changed into another prime (40471549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20235789 + 20235790.

It is an arithmetic number, because the mean of its divisors is an integer number (20235790).

Almost surely, 2^40471579 is an apocalyptic number.

40471579 is a deficient number, since it is larger than the sum of its proper divisors (1).

40471579 is an equidigital number, since it uses as much as digits as its factorization.

40471579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 40471579 is about 6361.7276741464. The cubic root of 40471579 is about 343.3339232926. Note that the first 3 decimals are identical.

The spelling of 40471579 in words is "forty million, four hundred seventy-one thousand, five hundred seventy-nine".