3929139 has 6 divisors (see below), whose sum is σ = 5675436. Its totient is φ = 2619420.

The previous prime is 3929131. The next prime is 3929161. The reversal of 3929139 is 9319293.

It is not a de Polignac number, because 3929139 - 2³ = 3929131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3929131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218277 + ... + 218294.

It is an arithmetic number, because the mean of its divisors is an integer number (945906).

Almost surely, 2^3929139 is an apocalyptic number.

3929139 is a deficient number, since it is larger than the sum of its proper divisors (1746297).

3929139 is a wasteful number, since it uses less digits than its factorization.

3929139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436577 (or 436574 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The square root of 3929139 is about 1982.2055897409. The cubic root of 3929139 is about 157.7971412495.

The spelling of 3929139 in words is "three million, nine hundred twenty-nine thousand, one hundred thirty-nine".