3721949 has 8 divisors (see below), whose sum is σ = 4640448. Its totient is φ = 2900160.

The previous prime is 3721943. The next prime is 3721957. The reversal of 3721949 is 9491273.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3721949 - 2⁴ = 3721933 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721943) 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 7 ways as a sum of consecutive naturals, for example, 24092 + ... + 24245.

It is an arithmetic number, because the mean of its divisors is an integer number (580056).

Almost surely, 2^3721949 is an apocalyptic number.

It is an amenable number.

3721949 is a deficient number, since it is larger than the sum of its proper divisors (918499).

3721949 is a wasteful number, since it uses less digits than its factorization.

3721949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48355.

The product of its digits is 13608, while the sum is 35.

The square root of 3721949 is about 1929.2353407503. The cubic root of 3721949 is about 154.9732732273.

The spelling of 3721949 in words is "three million, seven hundred twenty-one thousand, nine hundred forty-nine".