40853309 has 12 divisors (see below), whose sum is σ = 47965500. Its totient is φ = 34691328.

The previous prime is 40853303. The next prime is 40853321. The reversal of 40853309 is 90335804.

It can be written as a sum of positive squares in 2 ways, for example, as 12996025 + 27857284 = 3605^2 + 5278^2 .

It is not a de Polignac number, because 40853309 - 2¹² = 40849213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40853303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1517 + ... + 9165.

It is an arithmetic number, because the mean of its divisors is an integer number (3997125).

Almost surely, 2^40853309 is an apocalyptic number.

40853309 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

40853309 is a deficient number, since it is larger than the sum of its proper divisors (7112191).

40853309 is a wasteful number, since it uses less digits than its factorization.

40853309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772 (or 7765 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 40853309 is about 6391.6593307216. The cubic root of 40853309 is about 344.4099948627.

The spelling of 40853309 in words is "forty million, eight hundred fifty-three thousand, three hundred nine".