40426717 has 2 divisors, whose sum is σ = 40426718. Its totient is φ = 40426716.

The previous prime is 40426679. The next prime is 40426723. The reversal of 40426717 is 71762404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23951236 + 16475481 = 4894^2 + 4059^2 .

It is a cyclic number.

It is not a de Polignac number, because 40426717 - 2¹¹ = 40424669 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40426747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20213358 + 20213359.

It is an arithmetic number, because the mean of its divisors is an integer number (20213359).

Almost surely, 2^40426717 is an apocalyptic number.

It is an amenable number.

40426717 is a deficient number, since it is larger than the sum of its proper divisors (1).

40426717 is an equidigital number, since it uses as much as digits as its factorization.

40426717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 40426717 is about 6358.2007675128. The cubic root of 40426717 is about 343.2070166128.

The spelling of 40426717 in words is "forty million, four hundred twenty-six thousand, seven hundred seventeen".