40040827 has 4 divisors (see below), whose sum is σ = 40697296. Its totient is φ = 39384360.

The previous prime is 40040813. The next prime is 40040839. The reversal of 40040827 is 72804004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40040827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40040807) 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, 328143 + ... + 328264.

It is an arithmetic number, because the mean of its divisors is an integer number (10174324).

Almost surely, 2^40040827 is an apocalyptic number.

40040827 is a deficient number, since it is larger than the sum of its proper divisors (656469).

40040827 is an equidigital number, since it uses as much as digits as its factorization.

40040827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656468.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 40040827 is about 6327.7821549102. The cubic root of 40040827 is about 342.1115050841. Note that the first 3 decimals are identical.

The spelling of 40040827 in words is "forty million, forty thousand, eight hundred twenty-seven".