2978212329 has 9 divisors (see below), whose sum is σ = 4302098749. Its totient is φ = 1985365740.

The previous prime is 2978212327. The next prime is 2978212373. The reversal of 2978212329 is 9232128792.

It is a happy number.

The square root of 2978212329 is 54573.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 2978212329 - 2¹ = 2978212327 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2978212327) 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 8 ways as a sum of consecutive naturals, for example, 154624 + ... + 172814.

Almost surely, 2^2978212329 is an apocalyptic number.

2978212329 is the 54573-rd square number.

2978212329 is the 27287-th centered octagonal number.

It is an amenable number.

2978212329 is a deficient number, since it is larger than the sum of its proper divisors (1323886420).

2978212329 is an frugal number, since it uses more digits than its factorization.

2978212329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36388 (or 18194 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The cubic root of 2978212329 is about 1438.7496104596.

The spelling of 2978212329 in words is "two billion, nine hundred seventy-eight million, two hundred twelve thousand, three hundred twenty-nine".