40204343 has 4 divisors (see below), whose sum is σ = 40371408. Its totient is φ = 40037280.

The previous prime is 40204331. The next prime is 40204349. The reversal of 40204343 is 34340204.

It is a happy number.

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 40204343 - 2⁴ = 40204327 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 (40204349) 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, 83171 + ... + 83652.

It is an arithmetic number, because the mean of its divisors is an integer number (10092852).

Almost surely, 2^40204343 is an apocalyptic number.

40204343 is a deficient number, since it is larger than the sum of its proper divisors (167065).

40204343 is a wasteful number, since it uses less digits than its factorization.

40204343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167064.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 40204343 is about 6340.6894735510. The cubic root of 40204343 is about 342.5765698059.

Adding to 40204343 its reverse (34340204), we get a palindrome (74544547).

The spelling of 40204343 in words is "forty million, two hundred four thousand, three hundred forty-three".