489206391 has 4 divisors (see below), whose sum is σ = 652275192. Its totient is φ = 326137592.

The previous prime is 489206369. The next prime is 489206437. The reversal of 489206391 is 193602984.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 489206391 - 2¹⁴ = 489190007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489206321) 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, 81534396 + ... + 81534401.

It is an arithmetic number, because the mean of its divisors is an integer number (163068798).

Almost surely, 2^489206391 is an apocalyptic number.

489206391 is a deficient number, since it is larger than the sum of its proper divisors (163068801).

489206391 is a wasteful number, since it uses less digits than its factorization.

489206391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163068800.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 489206391 is about 22118.0105570099. The cubic root of 489206391 is about 787.9476670606.

The spelling of 489206391 in words is "four hundred eighty-nine million, two hundred six thousand, three hundred ninety-one".