3929902 has 4 divisors (see below), whose sum is σ = 5894856. Its totient is φ = 1964950.

The previous prime is 3929879. The next prime is 3929917. The reversal of 3929902 is 2099293.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982474 + ... + 982477.

It is an arithmetic number, because the mean of its divisors is an integer number (1473714).

Almost surely, 2^3929902 is an apocalyptic number.

3929902 is a deficient number, since it is larger than the sum of its proper divisors (1964954).

3929902 is a wasteful number, since it uses less digits than its factorization.

3929902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964953.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 3929902 is about 1982.3980427755. The cubic root of 3929902 is about 157.8073548040.

Subtracting from 3929902 its reverse (2099293), we obtain a square (1830609 = 1353²).

The spelling of 3929902 in words is "three million, nine hundred twenty-nine thousand, nine hundred two".