383407 has 4 divisors (see below), whose sum is σ = 384696. Its totient is φ = 382120.

The previous prime is 383399. The next prime is 383417. The reversal of 383407 is 704383.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 704383 = 43 ⋅16381.

It is a cyclic number.

It is not a de Polignac number, because 383407 - 2³ = 383399 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57 + ... + 877.

It is an arithmetic number, because the mean of its divisors is an integer number (96174).

2³⁸³⁴⁰⁷ is an apocalyptic number.

383407 is a deficient number, since it is larger than the sum of its proper divisors (1289).

383407 is an equidigital number, since it uses as much as digits as its factorization.

383407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 383407 is about 619.1986757092. The cubic root of 383407 is about 72.6473894193.

The spelling of 383407 in words is "three hundred eighty-three thousand, four hundred seven".