3849780 has 96 divisors (see below), whose sum is σ = 12418560. Its totient is φ = 881280.

The previous prime is 3849767. The next prime is 3849787. The reversal of 3849780 is 879483.

3849780 = T₄₃₁ + T₄₃₂ + ... + T₄₆₈.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3849787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12387 + ... + 12693.

It is an arithmetic number, because the mean of its divisors is an integer number (129360).

Almost surely, 2^3849780 is an apocalyptic number.

3849780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3849780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6209280).

3849780 is an abundant number, since it is smaller than the sum of its proper divisors (8568780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3849780 is a wasteful number, since it uses less digits than its factorization.

3849780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 3849780 is about 1962.0856250429. The cubic root of 3849780 is about 156.7275353239.

The spelling of 3849780 in words is "three million, eight hundred forty-nine thousand, seven hundred eighty".