4937781 has 4 divisors (see below), whose sum is σ = 6583712. Its totient is φ = 3291852.

The previous prime is 4937731. The next prime is 4937791. The reversal of 4937781 is 1877394.

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 4937781 - 2¹⁷ = 4806709 is a prime.

It is a super-2 number, since 2×4937781² = 48763362407922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

4937781 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4937731) 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, 822961 + ... + 822966.

It is an arithmetic number, because the mean of its divisors is an integer number (1645928).

Almost surely, 2^4937781 is an apocalyptic number.

It is an amenable number.

4937781 is a deficient number, since it is larger than the sum of its proper divisors (1645931).

4937781 is a wasteful number, since it uses less digits than its factorization.

4937781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645930.

The product of its digits is 42336, while the sum is 39.

The square root of 4937781 is about 2222.1118333693. Note that the first 3 decimals coincide. The cubic root of 4937781 is about 170.2853454617.

The spelling of 4937781 in words is "four million, nine hundred thirty-seven thousand, seven hundred eighty-one".