40406343 has 8 divisors (see below), whose sum is σ = 53975808. Its totient is φ = 26887224.

The previous prime is 40406329. The next prime is 40406381. The reversal of 40406343 is 34360404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40406343 - 2¹⁴ = 40389959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40406383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10671 + ... + 13952.

It is an arithmetic number, because the mean of its divisors is an integer number (6746976).

Almost surely, 2^40406343 is an apocalyptic number.

40406343 is a deficient number, since it is larger than the sum of its proper divisors (13569465).

40406343 is a wasteful number, since it uses less digits than its factorization.

40406343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25173.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 40406343 is about 6356.5983827830. The cubic root of 40406343 is about 343.1493511605.

Adding to 40406343 its reverse (34360404), we get a palindrome (74766747).

The spelling of 40406343 in words is "forty million, four hundred six thousand, three hundred forty-three".