4778487 has 32 divisors (see below), whose sum is σ = 8194560. Its totient is φ = 2695680.

The previous prime is 4778483. The next prime is 4778489. The reversal of 4778487 is 7848774.

It is not a de Polignac number, because 4778487 - 2² = 4778483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24663 + ... + 24855.

It is an arithmetic number, because the mean of its divisors is an integer number (256080).

Almost surely, 2^4778487 is an apocalyptic number.

4778487 is a deficient number, since it is larger than the sum of its proper divisors (3416073).

4778487 is a wasteful number, since it uses less digits than its factorization.

4778487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 334 counting only the distinct ones).

The product of its digits is 351232, while the sum is 45.

The square root of 4778487 is about 2185.9750684763. The cubic root of 4778487 is about 168.4341449749.

The spelling of 4778487 in words is "four million, seven hundred seventy-eight thousand, four hundred eighty-seven".