4649278 has 4 divisors (see below), whose sum is σ = 6973920. Its totient is φ = 2324638.

The previous prime is 4649269. The next prime is 4649291. The reversal of 4649278 is 8729464.

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

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 4649278.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1162318 + ... + 1162321.

It is an arithmetic number, because the mean of its divisors is an integer number (1743480).

Almost surely, 2^4649278 is an apocalyptic number.

4649278 is a deficient number, since it is larger than the sum of its proper divisors (2324642).

4649278 is a wasteful number, since it uses less digits than its factorization.

4649278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324641.

The product of its digits is 96768, while the sum is 40.

The square root of 4649278 is about 2156.2184490445. The cubic root of 4649278 is about 166.9021143408.

The spelling of 4649278 in words is "four million, six hundred forty-nine thousand, two hundred seventy-eight".