40049717 has 2 divisors, whose sum is σ = 40049718. Its totient is φ = 40049716.

The previous prime is 40049683. The next prime is 40049729. The reversal of 40049717 is 71794004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21031396 + 19018321 = 4586^2 + 4361^2 .

It is a cyclic number.

It is not a de Polignac number, because 40049717 - 2⁸ = 40049461 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 (40049797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20024858 + 20024859.

It is an arithmetic number, because the mean of its divisors is an integer number (20024859).

Almost surely, 2^40049717 is an apocalyptic number.

It is an amenable number.

40049717 is a deficient number, since it is larger than the sum of its proper divisors (1).

40049717 is an equidigital number, since it uses as much as digits as its factorization.

40049717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 40049717 is about 6328.4845737349. The cubic root of 40049717 is about 342.1368221288.

The spelling of 40049717 in words is "forty million, forty-nine thousand, seven hundred seventeen".