478691049 has 16 divisors (see below), whose sum is σ = 682007040. Its totient is φ = 297596160.

The previous prime is 478691009. The next prime is 478691051. The reversal of 478691049 is 940196874.

478691049 = T₂₉₀₉ + T₂₉₁₀ + ... + T₃₀₁₇.

It is not a de Polignac number, because 478691049 - 2¹² = 478686953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 478690989 and 478691007.

It is not an unprimeable number, because it can be changed into a prime (478691009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37497 + ... + 48614.

It is an arithmetic number, because the mean of its divisors is an integer number (42625440).

Almost surely, 2^478691049 is an apocalyptic number.

It is an amenable number.

478691049 is a deficient number, since it is larger than the sum of its proper divisors (203315991).

478691049 is a wasteful number, since it uses less digits than its factorization.

478691049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86240.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 478691049 is about 21879.0093240073. The cubic root of 478691049 is about 782.2611622610.

The spelling of 478691049 in words is "four hundred seventy-eight million, six hundred ninety-one thousand, forty-nine".