329040861 has 4 divisors (see below), whose sum is σ = 438721152. Its totient is φ = 219360572.

The previous prime is 329040853. The next prime is 329040869. The reversal of 329040861 is 168040923.

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 an interprime number because it is at equal distance from previous prime (329040853) and next prime (329040869).

It is a cyclic number.

It is not a de Polignac number, because 329040861 - 2³ = 329040853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329040869) 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 in 3 ways as a sum of consecutive naturals, for example, 54840141 + ... + 54840146.

It is an arithmetic number, because the mean of its divisors is an integer number (109680288).

Almost surely, 2^329040861 is an apocalyptic number.

It is an amenable number.

329040861 is a deficient number, since it is larger than the sum of its proper divisors (109680291).

329040861 is a wasteful number, since it uses less digits than its factorization.

329040861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109680290.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 329040861 is about 18139.4834821723. The cubic root of 329040861 is about 690.3721726721.

The spelling of 329040861 in words is "three hundred twenty-nine million, forty thousand, eight hundred sixty-one".