383964641 has 2 divisors, whose sum is σ = 383964642. Its totient is φ = 383964640.

The previous prime is 383964629. The next prime is 383964689. The reversal of 383964641 is 146469383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368793616 + 15171025 = 19204^2 + 3895^2 .

It is a cyclic number.

It is not a de Polignac number, because 383964641 - 2²² = 379770337 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 383964592 and 383964601.

It is not a weakly prime, because it can be changed into another prime (383964241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191982320 + 191982321.

It is an arithmetic number, because the mean of its divisors is an integer number (191982321).

Almost surely, 2^383964641 is an apocalyptic number.

It is an amenable number.

383964641 is a deficient number, since it is larger than the sum of its proper divisors (1).

383964641 is an equidigital number, since it uses as much as digits as its factorization.

383964641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 44.

The square root of 383964641 is about 19595.0157182892. The cubic root of 383964641 is about 726.8259268762.

The spelling of 383964641 in words is "three hundred eighty-three million, nine hundred sixty-four thousand, six hundred forty-one".