3906929 has 8 divisors (see below), whose sum is σ = 4237800. Its totient is φ = 3580416.

The previous prime is 3906919. The next prime is 3906949. The reversal of 3906929 is 9296093.

It can be written as a sum of positive squares in 4 ways, for example, as 112225 + 3794704 = 335^2 + 1948^2 .

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 3906929 - 2¹⁶ = 3841393 is a prime.

It is a super-2 number, since 2×3906929² = 30528188422082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3906892 and 3906901.

It is not an unprimeable number, because it can be changed into a prime (3906919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929 + ... + 2945.

It is an arithmetic number, because the mean of its divisors is an integer number (529725).

Almost surely, 2^3906929 is an apocalyptic number.

It is an amenable number.

3906929 is a deficient number, since it is larger than the sum of its proper divisors (330871).

3906929 is a wasteful number, since it uses less digits than its factorization.

3906929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 3906929 is about 1976.5953050637. The cubic root of 3906929 is about 157.4992558964.

The spelling of 3906929 in words is "three million, nine hundred six thousand, nine hundred twenty-nine".