4778992 has 10 divisors (see below), whose sum is σ = 9259328. Its totient is φ = 2389488.

The previous prime is 4778981. The next prime is 4778993. The reversal of 4778992 is 2998774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149328 + ... + 149359.

Almost surely, 2^4778992 is an apocalyptic number.

It is an amenable number.

4778992 is a deficient number, since it is larger than the sum of its proper divisors (4480336).

4778992 is a wasteful number, since it uses less digits than its factorization.

4778992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298695 (or 298689 counting only the distinct ones).

The product of its digits is 254016, while the sum is 46.

The square root of 4778992 is about 2186.0905745188. The cubic root of 4778992 is about 168.4400782509.

The spelling of 4778992 in words is "four million, seven hundred seventy-eight thousand, nine hundred ninety-two".