2240857897 has 2 divisors, whose sum is σ = 2240857898. Its totient is φ = 2240857896.

The previous prime is 2240857877. The next prime is 2240857901. The reversal of 2240857897 is 7987580422.

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., 1642761961 + 598095936 = 40531^2 + 24456^2 .

It is a cyclic number.

It is not a de Polignac number, because 2240857897 - 2²⁷ = 2106640169 is a prime.

It is a super-2 number, since 2×2240857897² = 10042888229094525218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2240857837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1120428948 + 1120428949.

It is an arithmetic number, because the mean of its divisors is an integer number (1120428949).

Almost surely, 2^2240857897 is an apocalyptic number.

It is an amenable number.

2240857897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2240857897 is an equidigital number, since it uses as much as digits as its factorization.

2240857897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The square root of 2240857897 is about 47337.7005884316. The cubic root of 2240857897 is about 1308.5935407300.

The spelling of 2240857897 in words is "two billion, two hundred forty million, eight hundred fifty-seven thousand, eight hundred ninety-seven".