363878389 has 4 divisors (see below), whose sum is σ = 415861024. Its totient is φ = 311895756.

The previous prime is 363878381. The next prime is 363878447. The reversal of 363878389 is 983878363.

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 a cyclic number.

It is not a de Polignac number, because 363878389 - 2³ = 363878381 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (363878381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25991307 + ... + 25991320.

It is an arithmetic number, because the mean of its divisors is an integer number (103965256).

Almost surely, 2^363878389 is an apocalyptic number.

It is an amenable number.

363878389 is a deficient number, since it is larger than the sum of its proper divisors (51982635).

363878389 is an equidigital number, since it uses as much as digits as its factorization.

363878389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51982634.

The product of its digits is 5225472, while the sum is 55.

The square root of 363878389 is about 19075.5966879152. The cubic root of 363878389 is about 713.9241740388.

The spelling of 363878389 in words is "three hundred sixty-three million, eight hundred seventy-eight thousand, three hundred eighty-nine".