3940264469 has 2 divisors, whose sum is σ = 3940264470. Its totient is φ = 3940264468.

The previous prime is 3940264417. The next prime is 3940264499. The reversal of 3940264469 is 9644620493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3932920369 + 7344100 = 62713^2 + 2710^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3940264469 is a prime.

It is a super-2 number, since 2×3940264469² = 31051368171327703922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3940264499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970132234 + 1970132235.

It is an arithmetic number, because the mean of its divisors is an integer number (1970132235).

Almost surely, 2^3940264469 is an apocalyptic number.

It is an amenable number.

3940264469 is a deficient number, since it is larger than the sum of its proper divisors (1).

3940264469 is an equidigital number, since it uses as much as digits as its factorization.

3940264469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The square root of 3940264469 is about 62771.5259413056. The cubic root of 3940264469 is about 1579.4593659839.

The spelling of 3940264469 in words is "three billion, nine hundred forty million, two hundred sixty-four thousand, four hundred sixty-nine".