383946261 has 16 divisors (see below), whose sum is σ = 521448768. Its totient is φ = 251222400.

The previous prime is 383946239. The next prime is 383946271. The reversal of 383946261 is 162649383.

It is not a de Polignac number, because 383946261 - 2¹⁴ = 383929877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383946221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93330 + ... + 97356.

It is an arithmetic number, because the mean of its divisors is an integer number (32590548).

Almost surely, 2^383946261 is an apocalyptic number.

It is an amenable number.

383946261 is a deficient number, since it is larger than the sum of its proper divisors (137502507).

383946261 is a wasteful number, since it uses less digits than its factorization.

383946261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612.

The product of its digits is 186624, while the sum is 42.

The square root of 383946261 is about 19594.5467158595. The cubic root of 383946261 is about 726.8143292165.

The spelling of 383946261 in words is "three hundred eighty-three million, nine hundred forty-six thousand, two hundred sixty-one".