40223365 has 48 divisors (see below), whose sum is σ = 61650288. Its totient is φ = 24966144.

The previous prime is 40223363. The next prime is 40223369. The reversal of 40223365 is 56332204.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2401 + 40220964 = 49^2 + 6342^2 .

It is not a de Polignac number, because 40223365 - 2¹ = 40223363 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40223363) 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 47 ways as a sum of consecutive naturals, for example, 232419 + ... + 232591.

It is an arithmetic number, because the mean of its divisors is an integer number (1284381).

Almost surely, 2^40223365 is an apocalyptic number.

It is an amenable number.

40223365 is a deficient number, since it is larger than the sum of its proper divisors (21426923).

40223365 is a wasteful number, since it uses less digits than its factorization.

40223365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 40223365 is about 6342.1892907733. The cubic root of 40223365 is about 342.6305893767.

Adding to 40223365 its reverse (56332204), we get a palindrome (96555569).

The spelling of 40223365 in words is "forty million, two hundred twenty-three thousand, three hundred sixty-five".