3929425 has 6 divisors (see below), whose sum is σ = 4872518. Its totient is φ = 3143520.

The previous prime is 3929417. The next prime is 3929449. The reversal of 3929425 is 5249293.

It can be written as a sum of positive squares in 3 ways, for example, as 1236544 + 2692881 = 1112^2 + 1641^2 .

It is not a de Polignac number, because 3929425 - 2³ = 3929417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78564 + ... + 78613.

Almost surely, 2^3929425 is an apocalyptic number.

It is an amenable number.

3929425 is a deficient number, since it is larger than the sum of its proper divisors (943093).

3929425 is a wasteful number, since it uses less digits than its factorization.

3929425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157187 (or 157182 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 3929425 is about 1982.2777302891. The cubic root of 3929425 is about 157.8009698141.

The spelling of 3929425 in words is "three million, nine hundred twenty-nine thousand, four hundred twenty-five".