40746309 has 8 divisors (see below), whose sum is σ = 54456192. Its totient is φ = 27100320.

The previous prime is 40746289. The next prime is 40746311. The reversal of 40746309 is 90364704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40746309 - 2⁹ = 40745797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40746309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40746319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14464 + ... + 17049.

It is an arithmetic number, because the mean of its divisors is an integer number (6807024).

Almost surely, 2^40746309 is an apocalyptic number.

It is an amenable number.

40746309 is a deficient number, since it is larger than the sum of its proper divisors (13709883).

40746309 is a wasteful number, since it uses less digits than its factorization.

40746309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31947.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 40746309 is about 6383.2835594230. The cubic root of 40746309 is about 344.1090474773.

The spelling of 40746309 in words is "forty million, seven hundred forty-six thousand, three hundred nine".