40332013 has 2 divisors, whose sum is σ = 40332014. Its totient is φ = 40332012.

The previous prime is 40332001. The next prime is 40332029. The reversal of 40332013 is 31023304.

It is an a-pointer prime, because the next prime (40332029) can be obtained adding 40332013 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26811684 + 13520329 = 5178^2 + 3677^2 .

It is a cyclic number.

It is not a de Polignac number, because 40332013 - 2⁵ = 40331981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40332053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20166006 + 20166007.

It is an arithmetic number, because the mean of its divisors is an integer number (20166007).

Almost surely, 2^40332013 is an apocalyptic number.

It is an amenable number.

40332013 is a deficient number, since it is larger than the sum of its proper divisors (1).

40332013 is an equidigital number, since it uses as much as digits as its factorization.

40332013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 40332013 is about 6350.7490109435. The cubic root of 40332013 is about 342.9388070930.

Adding to 40332013 its reverse (31023304), we get a palindrome (71355317).

The spelling of 40332013 in words is "forty million, three hundred thirty-two thousand, thirteen".