383624392961 has 4 divisors (see below), whose sum is σ = 383945956932. Its totient is φ = 383302828992.

The previous prime is 383624392939. The next prime is 383624392967. The reversal of 383624392961 is 169293426383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 169293426383 = 263 ⋅643701241.

It can be written as a sum of positive squares in 2 ways, for example, as 258845895361 + 124778497600 = 508769^2 + 353240^2 .

It is a cyclic number.

It is not a de Polignac number, because 383624392961 - 2¹⁸ = 383624130817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 383624392897 and 383624392906.

It is not an unprimeable number, because it can be changed into a prime (383624392967) 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, 160780196 + ... + 160782581.

It is an arithmetic number, because the mean of its divisors is an integer number (95986489233).

Almost surely, 2^383624392961 is an apocalyptic number.

It is an amenable number.

383624392961 is a deficient number, since it is larger than the sum of its proper divisors (321563971).

383624392961 is a wasteful number, since it uses less digits than its factorization.

383624392961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321563970.

The product of its digits is 10077696, while the sum is 56.

The spelling of 383624392961 in words is "three hundred eighty-three billion, six hundred twenty-four million, three hundred ninety-two thousand, nine hundred sixty-one".