478121956 has 45 divisors (see below), whose sum is σ = 938385021. Its totient is φ = 213062304.

The previous prime is 478121939. The next prime is 478121989. The reversal of 478121956 is 659121874.

The square root of 478121956 is 21866.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 390062500 + 88059456 = 19750^2 + 9384^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 16486950 + ... + 16486978.

Almost surely, 2^478121956 is an apocalyptic number.

478121956 is the 21866-th square number.

It is an amenable number.

478121956 is a deficient number, since it is larger than the sum of its proper divisors (460263065).

478121956 is an frugal number, since it uses more digits than its factorization.

478121956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 44 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The cubic root of 478121956 is about 781.9510416473.

The spelling of 478121956 in words is "four hundred seventy-eight million, one hundred twenty-one thousand, nine hundred fifty-six".