40350405 has 8 divisors (see below), whose sum is σ = 64560672. Its totient is φ = 21520208.

The previous prime is 40350403. The next prime is 40350491. The reversal of 40350405 is 50405304.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40350405 - 2¹ = 40350403 is a prime.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40350403) 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, 1344999 + ... + 1345028.

It is an arithmetic number, because the mean of its divisors is an integer number (8070084).

Almost surely, 2^40350405 is an apocalyptic number.

It is an amenable number.

40350405 is a deficient number, since it is larger than the sum of its proper divisors (24210267).

40350405 is a wasteful number, since it uses less digits than its factorization.

40350405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690035.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40350405 is about 6352.1968640778. The cubic root of 40350405 is about 342.9909275764.

Adding to 40350405 its reverse (50405304), we get a palindrome (90755709).

It can be divided in two parts, 40350 and 405, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 40350405 in words is "forty million, three hundred fifty thousand, four hundred five".