40838969 has 2 divisors, whose sum is σ = 40838970. Its totient is φ = 40838968.

The previous prime is 40838957. The next prime is 40838977. The reversal of 40838969 is 96983804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38278969 + 2560000 = 6187^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 40838969 - 2⁴ = 40838953 is a prime.

It is a super-2 number, since 2×40838969² = 3335642777965922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40838929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20419484 + 20419485.

It is an arithmetic number, because the mean of its divisors is an integer number (20419485).

Almost surely, 2^40838969 is an apocalyptic number.

It is an amenable number.

40838969 is a deficient number, since it is larger than the sum of its proper divisors (1).

40838969 is an equidigital number, since it uses as much as digits as its factorization.

40838969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 40838969 is about 6390.5374578356. The cubic root of 40838969 is about 344.3696928046.

The spelling of 40838969 in words is "forty million, eight hundred thirty-eight thousand, nine hundred sixty-nine".