40220343 has 6 divisors (see below), whose sum is σ = 58096064. Its totient is φ = 26813556.

The previous prime is 40220329. The next prime is 40220381. The reversal of 40220343 is 34302204.

It is not a de Polignac number, because 40220343 - 2⁹ = 40219831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40220393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2234455 + ... + 2234472.

Almost surely, 2^40220343 is an apocalyptic number.

40220343 is a deficient number, since it is larger than the sum of its proper divisors (17875721).

40220343 is a wasteful number, since it uses less digits than its factorization.

40220343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4468933 (or 4468930 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40220343 is about 6341.9510404922. The cubic root of 40220343 is about 342.6220084970.

Adding to 40220343 its reverse (34302204), we get a palindrome (74522547).

The spelling of 40220343 in words is "forty million, two hundred twenty thousand, three hundred forty-three".