40040223 has 4 divisors (see below), whose sum is σ = 53386968. Its totient is φ = 26693480.

The previous prime is 40040197. The next prime is 40040227. The reversal of 40040223 is 32204004.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40040223 - 2⁵ = 40040191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040227) 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, 6673368 + ... + 6673373.

It is an arithmetic number, because the mean of its divisors is an integer number (13346742).

Almost surely, 2^40040223 is an apocalyptic number.

40040223 is a deficient number, since it is larger than the sum of its proper divisors (13346745).

40040223 is a wasteful number, since it uses less digits than its factorization.

40040223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13346744.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 40040223 is about 6327.7344286877. The cubic root of 40040223 is about 342.1097848700.

Adding to 40040223 its reverse (32204004), we get a palindrome (72244227).

The spelling of 40040223 in words is "forty million, forty thousand, two hundred twenty-three".