3929929 has 4 divisors (see below), whose sum is σ = 3947776. Its totient is φ = 3912084.

The previous prime is 3929927. The next prime is 3929951. The reversal of 3929929 is 9299293.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9299293 = 97 ⋅95869.

It is a cyclic number.

It is not a de Polignac number, because 3929929 - 2¹ = 3929927 is a prime.

It is a Duffinian number.

3929929 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3929923) 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, 8589 + ... + 9034.

It is an arithmetic number, because the mean of its divisors is an integer number (986944).

Almost surely, 2^3929929 is an apocalyptic number.

It is an amenable number.

3929929 is a deficient number, since it is larger than the sum of its proper divisors (17847).

3929929 is a wasteful number, since it uses less digits than its factorization.

3929929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17846.

The product of its digits is 78732, while the sum is 43.

The square root of 3929929 is about 1982.4048526979. The cubic root of 3929929 is about 157.8077162031.

The spelling of 3929929 in words is "three million, nine hundred twenty-nine thousand, nine hundred twenty-nine".