3720849 has 16 divisors (see below), whose sum is σ = 5529600. Its totient is φ = 2206160.

The previous prime is 3720839. The next prime is 3720851. The reversal of 3720849 is 9480273.

It is not a de Polignac number, because 3720849 - 2⁹ = 3720337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is a d-powerful number, because it can be written as 3¹² + 7⁷ + 2²¹ + 0 + 8 + 4⁹ + 9⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352 + ... + 2750.

It is an arithmetic number, because the mean of its divisors is an integer number (345600).

Almost surely, 2^3720849 is an apocalyptic number.

It is an amenable number.

3720849 is a deficient number, since it is larger than the sum of its proper divisors (1808751).

3720849 is a wasteful number, since it uses less digits than its factorization.

3720849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 3720849 is about 1928.9502326395. The cubic root of 3720849 is about 154.9580045785.

The spelling of 3720849 in words is "three million, seven hundred twenty thousand, eight hundred forty-nine".