382402389 has 4 divisors (see below), whose sum is σ = 509869856. Its totient is φ = 254934924.

The previous prime is 382402373. The next prime is 382402451. The reversal of 382402389 is 983204283.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 382402389 - 2⁴ = 382402373 is a prime.

It is a super-2 number, since 2×382402389² = 292463174225814642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (382402309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63733729 + ... + 63733734.

It is an arithmetic number, because the mean of its divisors is an integer number (127467464).

Almost surely, 2^382402389 is an apocalyptic number.

It is an amenable number.

382402389 is a deficient number, since it is larger than the sum of its proper divisors (127467467).

382402389 is a wasteful number, since it uses less digits than its factorization.

382402389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127467466.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 382402389 is about 19555.1115823971. Note that the first 3 decimals coincide. The cubic root of 382402389 is about 725.8388318638.

The spelling of 382402389 in words is "three hundred eighty-two million, four hundred two thousand, three hundred eighty-nine".