4040040004397 has 2 divisors, whose sum is σ = 4040040004398. Its totient is φ = 4040040004396.

The previous prime is 4040040004339. The next prime is 4040040004411. The reversal of 4040040004397 is 7934000400404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3684503284036 + 355536720361 = 1919506^2 + 596269^2 .

It is a cyclic number.

It is not a de Polignac number, because 4040040004397 - 2⁶ = 4040040004333 is a prime.

It is a super-2 number, since 2×4040040004397² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4040040064397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020020002198 + 2020020002199.

It is an arithmetic number, because the mean of its divisors is an integer number (2020020002199).

Almost surely, 2^{4040040004397} is an apocalyptic number.

It is an amenable number.

4040040004397 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040040004397 is an equidigital number, since it uses as much as digits as its factorization.

4040040004397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 4040040004397 in words is "four trillion, forty billion, forty million, four thousand, three hundred ninety-seven".