40043307 has 4 divisors (see below), whose sum is σ = 53391080. Its totient is φ = 26695536.

The previous prime is 40043293. The next prime is 40043309. The reversal of 40043307 is 70334004.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40043307 - 2⁴ = 40043291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40043309) 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 3 ways as a sum of consecutive naturals, for example, 6673882 + ... + 6673887.

It is an arithmetic number, because the mean of its divisors is an integer number (13347770).

Almost surely, 2^40043307 is an apocalyptic number.

40043307 is a deficient number, since it is larger than the sum of its proper divisors (13347773).

40043307 is a wasteful number, since it uses less digits than its factorization.

40043307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13347772.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 40043307 is about 6327.9781131101. The cubic root of 40043307 is about 342.1185680336.

The spelling of 40043307 in words is "forty million, forty-three thousand, three hundred seven".