476989509 has 8 divisors (see below), whose sum is σ = 669459040. Its totient is φ = 301256496.

The previous prime is 476989507. The next prime is 476989517. The reversal of 476989509 is 905989674.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 476989509 - 2¹ = 476989507 is a prime.

It is a super-2 number, since 2×476989509² = 455037983392122162, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 8368237 = 476989509 / (4 + 7 + 6 + 9 + 8 + 9 + 5 + 0 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (476989507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4184062 + ... + 4184175.

It is an arithmetic number, because the mean of its divisors is an integer number (83682380).

Almost surely, 2^476989509 is an apocalyptic number.

It is an amenable number.

476989509 is a deficient number, since it is larger than the sum of its proper divisors (192469531).

476989509 is a wasteful number, since it uses less digits than its factorization.

476989509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8368259.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The square root of 476989509 is about 21840.0894915749. The cubic root of 476989509 is about 781.3331949888. Note that the first 3 decimals are identical.

The spelling of 476989509 in words is "four hundred seventy-six million, nine hundred eighty-nine thousand, five hundred nine".