40105349 has 2 divisors, whose sum is σ = 40105350. Its totient is φ = 40105348.

The previous prime is 40105343. The next prime is 40105367. The reversal of 40105349 is 94350104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23961025 + 16144324 = 4895^2 + 4018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40105349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40105343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20052674 + 20052675.

It is an arithmetic number, because the mean of its divisors is an integer number (20052675).

Almost surely, 2^40105349 is an apocalyptic number.

It is an amenable number.

40105349 is a deficient number, since it is larger than the sum of its proper divisors (1).

40105349 is an equidigital number, since it uses as much as digits as its factorization.

40105349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 40105349 is about 6332.8784134862. The cubic root of 40105349 is about 342.2951665634.

The spelling of 40105349 in words is "forty million, one hundred five thousand, three hundred forty-nine".