3721149 has 6 divisors (see below), whose sum is σ = 5375006. Its totient is φ = 2480760.

The previous prime is 3721141. The next prime is 3721153. The reversal of 3721149 is 9411273.

It can be written as a sum of positive squares in only one way, i.e., 3305124 + 416025 = 1818^2 + 645^2 .

It is not a de Polignac number, because 3721149 - 2³ = 3721141 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 (3721141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206722 + ... + 206739.

Almost surely, 2^3721149 is an apocalyptic number.

It is an amenable number.

3721149 is a deficient number, since it is larger than the sum of its proper divisors (1653857).

3721149 is a wasteful number, since it uses less digits than its factorization.

3721149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413467 (or 413464 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 3721149 is about 1929.0279935760. The cubic root of 3721149 is about 154.9621690538.

It can be divided in two parts, 372 and 1149, that added together give a square (1521 = 39²).

The spelling of 3721149 in words is "three million, seven hundred twenty-one thousand, one hundred forty-nine".