40586729 has 2 divisors, whose sum is σ = 40586730. Its totient is φ = 40586728.

The previous prime is 40586687. The next prime is 40586737. The reversal of 40586729 is 92768504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40386025 + 200704 = 6355^2 + 448^2 .

It is a cyclic number.

It is not a de Polignac number, because 40586729 - 2⁸ = 40586473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40586779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20293364 + 20293365.

It is an arithmetic number, because the mean of its divisors is an integer number (20293365).

Almost surely, 2^40586729 is an apocalyptic number.

It is an amenable number.

40586729 is a deficient number, since it is larger than the sum of its proper divisors (1).

40586729 is an equidigital number, since it uses as much as digits as its factorization.

40586729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 40586729 is about 6370.7714603492. The cubic root of 40586729 is about 343.6592336002.

The spelling of 40586729 in words is "forty million, five hundred eighty-six thousand, seven hundred twenty-nine".