40448897 has 2 divisors, whose sum is σ = 40448898. Its totient is φ = 40448896.

The previous prime is 40448887. The next prime is 40448909. The reversal of 40448897 is 79884404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27888961 + 12559936 = 5281^2 + 3544^2 .

It is a cyclic number.

It is not a de Polignac number, because 40448897 - 2⁶ = 40448833 is a prime.

It is a super-2 number, since 2×40448897² = 3272226537033218, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40448827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20224448 + 20224449.

It is an arithmetic number, because the mean of its divisors is an integer number (20224449).

Almost surely, 2^40448897 is an apocalyptic number.

It is an amenable number.

40448897 is a deficient number, since it is larger than the sum of its proper divisors (1).

40448897 is an equidigital number, since it uses as much as digits as its factorization.

40448897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 40448897 is about 6359.9447324643. The cubic root of 40448897 is about 343.2697716459.

The spelling of 40448897 in words is "forty million, four hundred forty-eight thousand, eight hundred ninety-seven".