40206433 has 4 divisors (see below), whose sum is σ = 40220820. Its totient is φ = 40192048.

The previous prime is 40206431. The next prime is 40206449. The reversal of 40206433 is 33460204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2347024 + 37859409 = 1532^2 + 6153^2 .

It is a cyclic number.

It is not a de Polignac number, because 40206433 - 2¹ = 40206431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40206431) 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, 1498 + ... + 9091.

It is an arithmetic number, because the mean of its divisors is an integer number (10055205).

Almost surely, 2^40206433 is an apocalyptic number.

It is an amenable number.

40206433 is a deficient number, since it is larger than the sum of its proper divisors (14387).

40206433 is a wasteful number, since it uses less digits than its factorization.

40206433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14386.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 40206433 is about 6340.8542799847. The cubic root of 40206433 is about 342.5825059194.

Adding to 40206433 its reverse (33460204), we get a palindrome (73666637).

The spelling of 40206433 in words is "forty million, two hundred six thousand, four hundred thirty-three".