604381989 has 4 divisors (see below), whose sum is σ = 805842656. Its totient is φ = 402921324.

The previous prime is 604381979. The next prime is 604381991. The reversal of 604381989 is 989183406.

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 604381989 - 2⁵ = 604381957 is a prime.

It is a super-2 number, since 2×604381989² = 730555177255192242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604381979) 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, 100730329 + ... + 100730334.

It is an arithmetic number, because the mean of its divisors is an integer number (201460664).

Almost surely, 2^604381989 is an apocalyptic number.

It is an amenable number.

604381989 is a deficient number, since it is larger than the sum of its proper divisors (201460667).

604381989 is a wasteful number, since it uses less digits than its factorization.

604381989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201460666.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 604381989 is about 24584.1816825372. The cubic root of 604381989 is about 845.4809717016.

The spelling of 604381989 in words is "six hundred four million, three hundred eighty-one thousand, nine hundred eighty-nine".