4778902 has 4 divisors (see below), whose sum is σ = 7168356. Its totient is φ = 2389450.

The previous prime is 4778869. The next prime is 4778927. The reversal of 4778902 is 2098774.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2098774 = 2 ⋅1049387.

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, 1194724 + ... + 1194727.

It is an arithmetic number, because the mean of its divisors is an integer number (1792089).

Almost surely, 2^4778902 is an apocalyptic number.

4778902 is a deficient number, since it is larger than the sum of its proper divisors (2389454).

4778902 is a wasteful number, since it uses less digits than its factorization.

4778902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389453.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 4778902 is about 2186.0699897304. The cubic root of 4778902 is about 168.4390208660.

The spelling of 4778902 in words is "four million, seven hundred seventy-eight thousand, nine hundred two".