40270289 has 2 divisors, whose sum is σ = 40270290. Its totient is φ = 40270288.

The previous prime is 40270261. The next prime is 40270339. The reversal of 40270289 is 98207204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22165264 + 18105025 = 4708^2 + 4255^2 .

It is a cyclic number.

It is not a de Polignac number, because 40270289 - 2¹⁶ = 40204753 is a prime.

It is a super-2 number, since 2×40270289² = 3243392352287042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40275289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20135144 + 20135145.

It is an arithmetic number, because the mean of its divisors is an integer number (20135145).

Almost surely, 2^40270289 is an apocalyptic number.

It is an amenable number.

40270289 is a deficient number, since it is larger than the sum of its proper divisors (1).

40270289 is an equidigital number, since it uses as much as digits as its factorization.

40270289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 40270289 is about 6345.8875659753. The cubic root of 40270289 is about 342.7637735750.

The spelling of 40270289 in words is "forty million, two hundred seventy thousand, two hundred eighty-nine".