4787881 has 4 divisors (see below), whose sum is σ = 5471872. Its totient is φ = 4103892.

The previous prime is 4787879. The next prime is 4787903. The reversal of 4787881 is 1887874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4787881 - 2¹ = 4787879 is a prime.

It is a super-2 number, since 2×4787881² = 45847608940322, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4787831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341985 + ... + 341998.

It is an arithmetic number, because the mean of its divisors is an integer number (1367968).

Almost surely, 2^4787881 is an apocalyptic number.

It is an amenable number.

4787881 is a deficient number, since it is larger than the sum of its proper divisors (683991).

4787881 is an equidigital number, since it uses as much as digits as its factorization.

4787881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683990.

The product of its digits is 100352, while the sum is 43.

The square root of 4787881 is about 2188.1227113670. The cubic root of 4787881 is about 168.5444472965.

The spelling of 4787881 in words is "four million, seven hundred eighty-seven thousand, eight hundred eighty-one".