40256297 has 2 divisors, whose sum is σ = 40256298. Its totient is φ = 40256296.

The previous prime is 40256291. The next prime is 40256303. The reversal of 40256297 is 79265204.

It is a balanced prime because it is at equal distance from previous prime (40256291) and next prime (40256303).

It can be written as a sum of positive squares in only one way, i.e., 37810201 + 2446096 = 6149^2 + 1564^2 .

It is a cyclic number.

It is not a de Polignac number, because 40256297 - 2¹⁰ = 40255273 is a prime.

It is not a weakly prime, because it can be changed into another prime (40256291) 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, 20128148 + 20128149.

It is an arithmetic number, because the mean of its divisors is an integer number (20128149).

Almost surely, 2^40256297 is an apocalyptic number.

It is an amenable number.

40256297 is a deficient number, since it is larger than the sum of its proper divisors (1).

40256297 is an equidigital number, since it uses as much as digits as its factorization.

40256297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 40256297 is about 6344.7850239390. The cubic root of 40256297 is about 342.7240709688.

The spelling of 40256297 in words is "forty million, two hundred fifty-six thousand, two hundred ninety-seven".