4999881 has 4 divisors (see below), whose sum is σ = 6666512.
Its totient is φ = 3333252.
The previous prime is 4999879. The next prime is 4999889. The reversal of 4999881 is 1889994.
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 not a de Polignac number, because 4999881 - 21 = 4999879 is a prime.
It is a super-2 number, since 2×49998812 = 49997620028322, which contains 22 as substring.
It is a D-number.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 4999881.
It is not an unprimeable number, because it can be changed into a prime (4999889) 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, 833311 + ... + 833316.
It is an arithmetic number, because the mean of its divisors is an integer number (1666628).
Almost surely, 24999881 is an apocalyptic number.
It is an amenable number.
4999881 is a deficient number, since it is larger than the sum of its proper divisors (1666631).
4999881 is a wasteful number, since it uses less digits than its factorization.
4999881 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1666630.
The product of its digits is 186624, while the sum is 48.
The square root of 4999881 is about 2236.0413681325.
The cubic root of 4999881 is about 170.9962380760.
The spelling of 4999881 in words is "four million, nine hundred ninety-nine thousand, eight hundred eighty-one".