4779981 has 12 divisors (see below), whose sum is σ = 7008352. Its totient is φ = 3138696.

The previous prime is 4779979. The next prime is 4779989. The reversal of 4779981 is 1899774.

It is not a de Polignac number, because 4779981 - 2¹ = 4779979 is a prime.

It is a super-2 number, since 2×4779981² = 45696436720722, which contains 22 as substring.

It is a Duffinian number.

4779981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4779989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3361 + ... + 4566.

Almost surely, 2^4779981 is an apocalyptic number.

It is an amenable number.

4779981 is a deficient number, since it is larger than the sum of its proper divisors (2228371).

4779981 is a wasteful number, since it uses less digits than its factorization.

4779981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000 (or 7997 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 4779981 is about 2186.3167657044. The cubic root of 4779981 is about 168.4516968619.

The spelling of 4779981 in words is "four million, seven hundred seventy-nine thousand, nine hundred eighty-one".