488851309 has 4 divisors (see below), whose sum is σ = 488929216. Its totient is φ = 488773404.

The previous prime is 488851291. The next prime is 488851313. The reversal of 488851309 is 903158884.

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 a de Polignac number, because none of the positive numbers 2^k-488851309 is a prime.

It is a super-2 number, since 2×488851309² = 477951204622026962, 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 (488851339) 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, 28629 + ... + 42394.

It is an arithmetic number, because the mean of its divisors is an integer number (122232304).

Almost surely, 2^488851309 is an apocalyptic number.

It is an amenable number.

488851309 is a deficient number, since it is larger than the sum of its proper divisors (77907).

488851309 is an equidigital number, since it uses as much as digits as its factorization.

488851309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77906.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 488851309 is about 22109.9821121592. The cubic root of 488851309 is about 787.7569815213.

The spelling of 488851309 in words is "four hundred eighty-eight million, eight hundred fifty-one thousand, three hundred nine".