479361509 has 4 divisors (see below), whose sum is σ = 522939840. Its totient is φ = 435783180.

The previous prime is 479361473. The next prime is 479361517. The reversal of 479361509 is 905163974.

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-479361509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 479361509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479361539) 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, 21789149 + ... + 21789170.

It is an arithmetic number, because the mean of its divisors is an integer number (130734960).

Almost surely, 2^479361509 is an apocalyptic number.

It is an amenable number.

479361509 is a deficient number, since it is larger than the sum of its proper divisors (43578331).

479361509 is a wasteful number, since it uses less digits than its factorization.

479361509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43578330.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 479361509 is about 21894.3259544568. The cubic root of 479361509 is about 782.6262064432.

The spelling of 479361509 in words is "four hundred seventy-nine million, three hundred sixty-one thousand, five hundred nine".