478338422 has 4 divisors (see below), whose sum is σ = 717507636. Its totient is φ = 239169210.

The previous prime is 478338403. The next prime is 478338437. The reversal of 478338422 is 224833874.

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

It is a super-2 number, since 2×478338422² = 457615291922900168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 478338422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119584604 + ... + 119584607.

It is an arithmetic number, because the mean of its divisors is an integer number (179376909).

Almost surely, 2^478338422 is an apocalyptic number.

478338422 is a deficient number, since it is larger than the sum of its proper divisors (239169214).

478338422 is a wasteful number, since it uses less digits than its factorization.

478338422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239169213.

The product of its digits is 258048, while the sum is 41.

The square root of 478338422 is about 21870.9492706650. The cubic root of 478338422 is about 782.0690312619.

The spelling of 478338422 in words is "four hundred seventy-eight million, three hundred thirty-eight thousand, four hundred twenty-two".