40349724797 has 2 divisors, whose sum is σ = 40349724798. Its totient is φ = 40349724796.

The previous prime is 40349724787. The next prime is 40349724827. The reversal of 40349724797 is 79742794304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36364201636 + 3985523161 = 190694^2 + 63131^2 .

It is a cyclic number.

It is not a de Polignac number, because 40349724797 - 2¹⁶ = 40349659261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40349724787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20174862398 + 20174862399.

It is an arithmetic number, because the mean of its divisors is an integer number (20174862399).

Almost surely, 2^40349724797 is an apocalyptic number.

It is an amenable number.

40349724797 is a deficient number, since it is larger than the sum of its proper divisors (1).

40349724797 is an equidigital number, since it uses as much as digits as its factorization.

40349724797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10668672, while the sum is 56.

The spelling of 40349724797 in words is "forty billion, three hundred forty-nine million, seven hundred twenty-four thousand, seven hundred ninety-seven".