3906149 has 8 divisors (see below), whose sum is σ = 4226040. Its totient is φ = 3589056.

The previous prime is 3906137. The next prime is 3906151. The reversal of 3906149 is 9416093.

It can be written as a sum of positive squares in 4 ways, for example, as 465124 + 3441025 = 682^2 + 1855^2 .

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 3906149 - 2¹² = 3902053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3906109) 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, 2939 + ... + 4055.

It is an arithmetic number, because the mean of its divisors is an integer number (528255).

Almost surely, 2^3906149 is an apocalyptic number.

It is an amenable number.

3906149 is a deficient number, since it is larger than the sum of its proper divisors (319891).

3906149 is a wasteful number, since it uses less digits than its factorization.

3906149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 3906149 is about 1976.3979862366. The cubic root of 3906149 is about 157.4887738702.

The spelling of 3906149 in words is "three million, nine hundred six thousand, one hundred forty-nine".