869478458 has 4 divisors (see below), whose sum is σ = 1304217690. Its totient is φ = 434739228.

The previous prime is 869478443. The next prime is 869478479. The reversal of 869478458 is 854874968.

869478458 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 808435489 + 61042969 = 28433^2 + 7813^2 .

It is a super-3 number, since 3×869478458³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 869478397 and 869478406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217369613 + ... + 217369616.

Almost surely, 2^869478458 is an apocalyptic number.

869478458 is a deficient number, since it is larger than the sum of its proper divisors (434739232).

869478458 is a wasteful number, since it uses less digits than its factorization.

869478458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434739231.

The product of its digits is 15482880, while the sum is 59.

The square root of 869478458 is about 29486.9201172316. The cubic root of 869478458 is about 954.4494722697.

The spelling of 869478458 in words is "eight hundred sixty-nine million, four hundred seventy-eight thousand, four hundred fifty-eight".