40788129 has 8 divisors (see below), whose sum is σ = 54731200. Its totient is φ = 27018576.

The previous prime is 40788113. The next prime is 40788161. The reversal of 40788129 is 92188704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40788129 - 2⁴ = 40788113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40788179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42829 + ... + 43770.

It is an arithmetic number, because the mean of its divisors is an integer number (6841400).

Almost surely, 2^40788129 is an apocalyptic number.

It is an amenable number.

40788129 is a deficient number, since it is larger than the sum of its proper divisors (13943071).

40788129 is a wasteful number, since it uses less digits than its factorization.

40788129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86759.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 40788129 is about 6386.5584628969. The cubic root of 40788129 is about 344.2267327372.

The spelling of 40788129 in words is "forty million, seven hundred eighty-eight thousand, one hundred twenty-nine".