40022243 has 4 divisors (see below), whose sum is σ = 40045320. Its totient is φ = 39999168.

The previous prime is 40022219. The next prime is 40022251. The reversal of 40022243 is 34222004.

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 40022243 - 2¹⁸ = 39760099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40022263) 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, 8705 + ... + 12482.

It is an arithmetic number, because the mean of its divisors is an integer number (10011330).

Almost surely, 2^40022243 is an apocalyptic number.

40022243 is a deficient number, since it is larger than the sum of its proper divisors (23077).

40022243 is a wasteful number, since it uses less digits than its factorization.

40022243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23076.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 40022243 is about 6326.3135394952. The cubic root of 40022243 is about 342.0585692471.

Adding to 40022243 its reverse (34222004), we get a palindrome (74244247).

The spelling of 40022243 in words is "forty million, twenty-two thousand, two hundred forty-three".