40000747 has 8 divisors (see below), whose sum is σ = 40609872. Its totient is φ = 39396000.

The previous prime is 40000733. The next prime is 40000759. The reversal of 40000747 is 74700004.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40000747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40000717) 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, 20373 + ... + 22249.

It is an arithmetic number, because the mean of its divisors is an integer number (5076234).

Almost surely, 2^40000747 is an apocalyptic number.

40000747 is a deficient number, since it is larger than the sum of its proper divisors (609125).

40000747 is a wasteful number, since it uses less digits than its factorization.

40000747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 40000747 is about 6324.6143755963. The cubic root of 40000747 is about 341.9973182421.

The spelling of 40000747 in words is "forty million, seven hundred forty-seven", and thus it is an aban number.