478436690 has 16 divisors (see below), whose sum is σ = 866167128. Its totient is φ = 190267776.

The previous prime is 478436683. The next prime is 478436737. The reversal of 478436690 is 96634874.

It can be written as a sum of positive squares in 4 ways, for example, as 451945081 + 26491609 = 21259^2 + 5147^2 .

It is a super-2 number, since 2×478436690² = 457803332676312200, which contains 22 as substring.

It is an unprimeable number.

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, 136547 + ... + 140006.

Almost surely, 2^478436690 is an apocalyptic number.

478436690 is a deficient number, since it is larger than the sum of its proper divisors (387730438).

478436690 is a wasteful number, since it uses less digits than its factorization.

478436690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276733.

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 478436690 is about 21873.1956970169. The cubic root of 478436690 is about 782.1225826765.

The spelling of 478436690 in words is "four hundred seventy-eight million, four hundred thirty-six thousand, six hundred ninety".