329865445 has 32 divisors (see below), whose sum is σ = 488936448. Its totient is φ = 208044288.

The previous prime is 329865421. The next prime is 329865469. The reversal of 329865445 is 544568923.

It is an interprime number because it is at equal distance from previous prime (329865421) and next prime (329865469).

It is a cyclic number.

It is not a de Polignac number, because 329865445 - 2⁵ = 329865413 is a prime.

It is a super-2 number, since 2×329865445² = 217622423610096050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 329865395 and 329865404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143092 + ... + 145378.

It is an arithmetic number, because the mean of its divisors is an integer number (15279264).

Almost surely, 2^329865445 is an apocalyptic number.

329865445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

329865445 is a deficient number, since it is larger than the sum of its proper divisors (159071003).

329865445 is a wasteful number, since it uses less digits than its factorization.

329865445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629.

The product of its digits is 1036800, while the sum is 46.

The square root of 329865445 is about 18162.1982425036. The cubic root of 329865445 is about 690.9483878088.

The spelling of 329865445 in words is "three hundred twenty-nine million, eight hundred sixty-five thousand, four hundred forty-five".