40943709 has 6 divisors (see below), whose sum is σ = 59140926. Its totient is φ = 27295800.

The previous prime is 40943681. The next prime is 40943713. The reversal of 40943709 is 90734904.

It can be written as a sum of positive squares in only one way, i.e., 23328900 + 17614809 = 4830^2 + 4197^2 .

It is not a de Polignac number, because 40943709 - 2⁸ = 40943453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40943509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2274642 + ... + 2274659.

It is an arithmetic number, because the mean of its divisors is an integer number (9856821).

Almost surely, 2^40943709 is an apocalyptic number.

It is an amenable number.

40943709 is a deficient number, since it is larger than the sum of its proper divisors (18197217).

40943709 is a wasteful number, since it uses less digits than its factorization.

40943709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549307 (or 4549304 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 40943709 is about 6398.7271390488. The cubic root of 40943709 is about 344.6638439602.

The spelling of 40943709 in words is "forty million, nine hundred forty-three thousand, seven hundred nine".