40839101 has 2 divisors, whose sum is σ = 40839102. Its totient is φ = 40839100.

The previous prime is 40839091. The next prime is 40839103. The reversal of 40839101 is 10193804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34234201 + 6604900 = 5851^2 + 2570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40839101 is a prime.

Together with 40839103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40839103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20419550 + 20419551.

It is an arithmetic number, because the mean of its divisors is an integer number (20419551).

Almost surely, 2^40839101 is an apocalyptic number.

It is an amenable number.

40839101 is a deficient number, since it is larger than the sum of its proper divisors (1).

40839101 is an equidigital number, since it uses as much as digits as its factorization.

40839101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 40839101 is about 6390.5477855971. The cubic root of 40839101 is about 344.3700638289.

The spelling of 40839101 in words is "forty million, eight hundred thirty-nine thousand, one hundred one".