3929149 has 4 divisors (see below), whose sum is σ = 4490464. Its totient is φ = 3367836.

The previous prime is 3929131. The next prime is 3929161. The reversal of 3929149 is 9419293.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3929149 - 2⁵ = 3929117 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3929129) 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, 280647 + ... + 280660.

It is an arithmetic number, because the mean of its divisors is an integer number (1122616).

Almost surely, 2^3929149 is an apocalyptic number.

It is an amenable number.

3929149 is a deficient number, since it is larger than the sum of its proper divisors (561315).

3929149 is an equidigital number, since it uses as much as digits as its factorization.

3929149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561314.

The product of its digits is 17496, while the sum is 37.

The square root of 3929149 is about 1982.2081121820. The cubic root of 3929149 is about 157.7972751185.

Adding to 3929149 its product of digits (17496), we get a triangular number (3946645 = T₂₈₀₉).

It can be divided in two parts, 39291 and 49, that added together give a triangular number (39340 = T₂₈₀).

The spelling of 3929149 in words is "three million, nine hundred twenty-nine thousand, one hundred forty-nine".