40780329 has 4 divisors (see below), whose sum is σ = 54373776. Its totient is φ = 27186884.

The previous prime is 40780309. The next prime is 40780343. The reversal of 40780329 is 92308704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40780329 - 2⁸ = 40780073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40780329.

It is not an unprimeable number, because it can be changed into a prime (40780309) 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 3 ways as a sum of consecutive naturals, for example, 6796719 + ... + 6796724.

It is an arithmetic number, because the mean of its divisors is an integer number (13593444).

Almost surely, 2^40780329 is an apocalyptic number.

It is an amenable number.

40780329 is a deficient number, since it is larger than the sum of its proper divisors (13593447).

40780329 is a wasteful number, since it uses less digits than its factorization.

40780329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13593446.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 40780329 is about 6385.9477761723. The cubic root of 40780329 is about 344.2047889368.

The spelling of 40780329 in words is "forty million, seven hundred eighty thousand, three hundred twenty-nine".