329391145 has 8 divisors (see below), whose sum is σ = 399344904. Its totient is φ = 260795904.

The previous prime is 329391143. The next prime is 329391157. The reversal of 329391145 is 541193923.

It can be written as a sum of positive squares in 4 ways, for example, as 1527696 + 327863449 = 1236^2 + 18107^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 329391145 - 2¹ = 329391143 is a prime.

It is a super-2 number, since 2×329391145² = 216997052808822050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (329391143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339094 + ... + 340063.

It is an arithmetic number, because the mean of its divisors is an integer number (49918113).

Almost surely, 2^329391145 is an apocalyptic number.

It is an amenable number.

329391145 is a deficient number, since it is larger than the sum of its proper divisors (69953759).

329391145 is an equidigital number, since it uses as much as digits as its factorization.

329391145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679259.

The product of its digits is 29160, while the sum is 37.

The square root of 329391145 is about 18149.1362053405. The cubic root of 329391145 is about 690.6170668403.

The spelling of 329391145 in words is "three hundred twenty-nine million, three hundred ninety-one thousand, one hundred forty-five".