4899781 has 4 divisors (see below), whose sum is σ = 4968864. Its totient is φ = 4830700.

The previous prime is 4899737. The next prime is 4899803. The reversal of 4899781 is 1879984.

It is a happy number.

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 4899781 - 2¹⁵ = 4867013 is a prime.

It is a super-2 number, since 2×4899781² = 48015707695922, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4899481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34435 + ... + 34576.

It is an arithmetic number, because the mean of its divisors is an integer number (1242216).

Almost surely, 2^4899781 is an apocalyptic number.

It is an amenable number.

4899781 is a deficient number, since it is larger than the sum of its proper divisors (69083).

4899781 is an equidigital number, since it uses as much as digits as its factorization.

4899781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69082.

The product of its digits is 145152, while the sum is 46.

The square root of 4899781 is about 2213.5448945075. The cubic root of 4899781 is about 169.8473947692.

The spelling of 4899781 in words is "four million, eight hundred ninety-nine thousand, seven hundred eighty-one".