855479615 has 8 divisors (see below), whose sum is σ = 1029485808. Its totient is φ = 682443520.

The previous prime is 855479609. The next prime is 855479629. The reversal of 855479615 is 516974558.

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

It is not a de Polignac number, because 855479615 - 2¹⁸ = 855217471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240581 + ... + 244110.

It is an arithmetic number, because the mean of its divisors is an integer number (128685726).

Almost surely, 2^855479615 is an apocalyptic number.

855479615 is a deficient number, since it is larger than the sum of its proper divisors (174006193).

855479615 is a wasteful number, since it uses less digits than its factorization.

855479615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485049.

The product of its digits is 1512000, while the sum is 50.

The square root of 855479615 is about 29248.5831280765. The cubic root of 855479615 is about 949.2994336411.

The spelling of 855479615 in words is "eight hundred fifty-five million, four hundred seventy-nine thousand, six hundred fifteen".