40906769 has 2 divisors, whose sum is σ = 40906770. Its totient is φ = 40906768.

The previous prime is 40906751. The next prime is 40906787. The reversal of 40906769 is 96760904.

It is a balanced prime because it is at equal distance from previous prime (40906751) and next prime (40906787).

It can be written as a sum of positive squares in only one way, i.e., 34656769 + 6250000 = 5887^2 + 2500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40906769 is a prime.

It is a super-2 number, since 2×40906769² = 3346727500038722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40906729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20453384 + 20453385.

It is an arithmetic number, because the mean of its divisors is an integer number (20453385).

Almost surely, 2^40906769 is an apocalyptic number.

It is an amenable number.

40906769 is a deficient number, since it is larger than the sum of its proper divisors (1).

40906769 is an equidigital number, since it uses as much as digits as its factorization.

40906769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 40906769 is about 6395.8399761095. The cubic root of 40906769 is about 344.5601592217.

The spelling of 40906769 in words is "forty million, nine hundred six thousand, seven hundred sixty-nine".