383949641 has 4 divisors (see below), whose sum is σ = 406534932. Its totient is φ = 361364352.

The previous prime is 383949637. The next prime is 383949691. The reversal of 383949641 is 146949383.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 174134416 + 209815225 = 13196^2 + 14485^2 .

It is a cyclic number.

It is not a de Polignac number, because 383949641 - 2² = 383949637 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 (383949691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11292620 + ... + 11292653.

It is an arithmetic number, because the mean of its divisors is an integer number (101633733).

Almost surely, 2^383949641 is an apocalyptic number.

It is an amenable number.

383949641 is a deficient number, since it is larger than the sum of its proper divisors (22585291).

383949641 is a wasteful number, since it uses less digits than its factorization.

383949641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22585290.

The product of its digits is 559872, while the sum is 47.

The square root of 383949641 is about 19594.6329641563. The cubic root of 383949641 is about 726.8164620021.

The spelling of 383949641 in words is "three hundred eighty-three million, nine hundred forty-nine thousand, six hundred forty-one".