4749781 has 2 divisors, whose sum is σ = 4749782. Its totient is φ = 4749780.

The previous prime is 4749779. The next prime is 4749793. The reversal of 4749781 is 1879474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2588881 + 2160900 = 1609^2 + 1470^2 .

It is a cyclic number.

It is not a de Polignac number, because 4749781 - 2¹ = 4749779 is a prime.

It is a super-2 number, since 2×4749781² = 45120839095922, which contains 22 as substring.

Together with 4749779, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4749751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2374890 + 2374891.

It is an arithmetic number, because the mean of its divisors is an integer number (2374891).

Almost surely, 2^4749781 is an apocalyptic number.

It is an amenable number.

4749781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4749781 is an equidigital number, since it uses as much as digits as its factorization.

4749781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 40.

The square root of 4749781 is about 2179.3992291455. The cubic root of 4749781 is about 168.0961868876.

The spelling of 4749781 in words is "four million, seven hundred forty-nine thousand, seven hundred eighty-one".