40893829 has 2 divisors, whose sum is σ = 40893830. Its totient is φ = 40893828.

The previous prime is 40893821. The next prime is 40893841. The reversal of 40893829 is 92839804.

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., 32512804 + 8381025 = 5702^2 + 2895^2 .

It is a cyclic number.

It is not a de Polignac number, because 40893829 - 2³ = 40893821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40893821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20446914 + 20446915.

It is an arithmetic number, because the mean of its divisors is an integer number (20446915).

Almost surely, 2^40893829 is an apocalyptic number.

It is an amenable number.

40893829 is a deficient number, since it is larger than the sum of its proper divisors (1).

40893829 is an equidigital number, since it uses as much as digits as its factorization.

40893829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 40893829 is about 6394.8283010570. The cubic root of 40893829 is about 344.5238239258.

The spelling of 40893829 in words is "forty million, eight hundred ninety-three thousand, eight hundred twenty-nine".