40216433 has 2 divisors, whose sum is σ = 40216434. Its totient is φ = 40216432.

The previous prime is 40216409. The next prime is 40216469. The reversal of 40216433 is 33461204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38093584 + 2122849 = 6172^2 + 1457^2 .

It is a cyclic number.

It is not a de Polignac number, because 40216433 - 2⁸ = 40216177 is a prime.

It is a super-2 number, since 2×40216433² = 3234722966486978, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40216399 and 40216408.

It is not a weakly prime, because it can be changed into another prime (40216403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20108216 + 20108217.

It is an arithmetic number, because the mean of its divisors is an integer number (20108217).

Almost surely, 2^40216433 is an apocalyptic number.

It is an amenable number.

40216433 is a deficient number, since it is larger than the sum of its proper divisors (1).

40216433 is an equidigital number, since it uses as much as digits as its factorization.

40216433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 40216433 is about 6341.6427682423. The cubic root of 40216433 is about 342.6109055296.

Adding to 40216433 its reverse (33461204), we get a palindrome (73677637).

It can be divided in two parts, 402 and 16433, that multiplied together give a palindrome (6606066).

The spelling of 40216433 in words is "forty million, two hundred sixteen thousand, four hundred thirty-three".