4040545897 has 2 divisors, whose sum is σ = 4040545898. Its totient is φ = 4040545896.

The previous prime is 4040545841. The next prime is 4040545931. The reversal of 4040545897 is 7985450404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3625364521 + 415181376 = 60211^2 + 20376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4040545897 is a prime.

It is a super-2 number, since 2×4040545897² = 32652022291527069218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4040545997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020272948 + 2020272949.

It is an arithmetic number, because the mean of its divisors is an integer number (2020272949).

Almost surely, 2^4040545897 is an apocalyptic number.

It is an amenable number.

4040545897 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040545897 is an equidigital number, since it uses as much as digits as its factorization.

4040545897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 4040545897 is about 63565.2884599763. The cubic root of 4040545897 is about 1592.7465808054.

It can be divided in two parts, 40405458 and 97, that added together give a triangular number (40405555 = T₈₉₈₉).

The spelling of 4040545897 in words is "four billion, forty million, five hundred forty-five thousand, eight hundred ninety-seven".