3722749 has 4 divisors (see below), whose sum is σ = 3729436. Its totient is φ = 3716064.

The previous prime is 3722713. The next prime is 3722767. The reversal of 3722749 is 9472273.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1397124 + 2325625 = 1182^2 + 1525^2 .

It is a cyclic number.

It is not a de Polignac number, because 3722749 - 2¹¹ = 3720701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3722149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2424 + ... + 3649.

It is an arithmetic number, because the mean of its divisors is an integer number (932359).

Almost surely, 2^3722749 is an apocalyptic number.

It is an amenable number.

3722749 is a deficient number, since it is larger than the sum of its proper divisors (6687).

3722749 is an equidigital number, since it uses as much as digits as its factorization.

3722749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6686.

The product of its digits is 21168, while the sum is 34.

The square root of 3722749 is about 1929.4426656421. The cubic root of 3722749 is about 154.9843758098.

The spelling of 3722749 in words is "three million, seven hundred twenty-two thousand, seven hundred forty-nine".