40224779 has 4 divisors (see below), whose sum is σ = 45971184. Its totient is φ = 34478376.

The previous prime is 40224773. The next prime is 40224787. The reversal of 40224779 is 97742204.

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 40224779 - 2⁸ = 40224523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40224773) 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, 2873192 + ... + 2873205.

It is an arithmetic number, because the mean of its divisors is an integer number (11492796).

Almost surely, 2^40224779 is an apocalyptic number.

40224779 is a deficient number, since it is larger than the sum of its proper divisors (5746405).

40224779 is an equidigital number, since it uses as much as digits as its factorization.

40224779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5746404.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 40224779 is about 6342.3007654951. The cubic root of 40224779 is about 342.6346042403.

The spelling of 40224779 in words is "forty million, two hundred twenty-four thousand, seven hundred seventy-nine".