40789829 has 2 divisors, whose sum is σ = 40789830. Its totient is φ = 40789828.

The previous prime is 40789753. The next prime is 40789841. The reversal of 40789829 is 92898704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31192225 + 9597604 = 5585^2 + 3098^2 .

It is a cyclic number.

It is not a de Polignac number, because 40789829 - 2¹² = 40785733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40789849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20394914 + 20394915.

It is an arithmetic number, because the mean of its divisors is an integer number (20394915).

Almost surely, 2^40789829 is an apocalyptic number.

It is an amenable number.

40789829 is a deficient number, since it is larger than the sum of its proper divisors (1).

40789829 is an equidigital number, since it uses as much as digits as its factorization.

40789829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 40789829 is about 6386.6915535354. The cubic root of 40789829 is about 344.2315149890.

The spelling of 40789829 in words is "forty million, seven hundred eighty-nine thousand, eight hundred twenty-nine".