40043306 has 8 divisors (see below), whose sum is σ = 61530084. Its totient is φ = 19533280.

The previous prime is 40043293. The next prime is 40043309. The reversal of 40043306 is 60334004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29539225 + 10504081 = 5435^2 + 3241^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40043309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244085 + ... + 244248.

Almost surely, 2^40043306 is an apocalyptic number.

40043306 is a deficient number, since it is larger than the sum of its proper divisors (21486778).

40043306 is a wasteful number, since it uses less digits than its factorization.

40043306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488376.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 40043306 is about 6327.9780340959. The cubic root of 40043306 is about 342.1185651857.

The spelling of 40043306 in words is "forty million, forty-three thousand, three hundred six".