40115223 has 48 divisors (see below), whose sum is σ = 64985760. Its totient is φ = 24440832.

The previous prime is 40115219. The next prime is 40115239. The reversal of 40115223 is 32251104.

It is not a de Polignac number, because 40115223 - 2² = 40115219 is a prime.

It is a super-2 number, since 2×40115223² = 3218462232679458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40115196 and 40115205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40115203) 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, 413511 + ... + 413607.

It is an arithmetic number, because the mean of its divisors is an integer number (1353870).

Almost surely, 2^40115223 is an apocalyptic number.

40115223 is a deficient number, since it is larger than the sum of its proper divisors (24870537).

40115223 is a wasteful number, since it uses less digits than its factorization.

40115223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40115223 is about 6333.6579478213. The cubic root of 40115223 is about 342.3232554612.

Adding to 40115223 its reverse (32251104), we get a palindrome (72366327).

The spelling of 40115223 in words is "forty million, one hundred fifteen thousand, two hundred twenty-three".