323939690649 has 27 divisors (see below), whose sum is σ = 470828838207. Its totient is φ = 214622274816.

The previous prime is 323939690639. The next prime is 323939690663. The reversal of 323939690649 is 946096939323.

The square root of 323939690649 is 569157.

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

323939690649 is a `hidden beast` number, since 3 + 239 + 396 + 9 + 0 + 6 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 78486824025 + 245452866624 = 280155^2 + 495432^2 .

It is not a de Polignac number, because 323939690649 - 2⁵ = 323939690617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (323939690639) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 329541412 + ... + 329542394.

Almost surely, 2^323939690649 is an apocalyptic number.

323939690649 is the 569157-th square number.

323939690649 is the 284579-th centered octagonal number.

It is an amenable number.

323939690649 is a deficient number, since it is larger than the sum of its proper divisors (146889147558).

323939690649 is an frugal number, since it uses more digits than its factorization.

323939690649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358 (or 1179 counting only the distinct ones).

The product of its (nonzero) digits is 51018336, while the sum is 63.

The spelling of 323939690649 in words is "three hundred twenty-three billion, nine hundred thirty-nine million, six hundred ninety thousand, six hundred forty-nine".