40040343 has 24 divisors (see below), whose sum is σ = 66382368. Its totient is φ = 22781952.

The previous prime is 40040293. The next prime is 40040393. The reversal of 40040343 is 34304004.

It is an interprime number because it is at equal distance from previous prime (40040293) and next prime (40040393).

It is not a de Polignac number, because 40040343 - 2¹² = 40036247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14955 + ... + 17427.

It is an arithmetic number, because the mean of its divisors is an integer number (2765932).

Almost surely, 2^40040343 is an apocalyptic number.

40040343 is a deficient number, since it is larger than the sum of its proper divisors (26342025).

40040343 is a wasteful number, since it uses less digits than its factorization.

40040343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743 (or 2740 counting only the distinct ones).

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

The square root of 40040343 is about 6327.7439107473. The cubic root of 40040343 is about 342.1101266357.

Adding to 40040343 its reverse (34304004), we get a palindrome (74344347).

The spelling of 40040343 in words is "forty million, forty thousand, three hundred forty-three".