3842739 has 6 divisors (see below), whose sum is σ = 5550636. Its totient is φ = 2561820.

The previous prime is 3842737. The next prime is 3842749. The reversal of 3842739 is 9372483.

3842739 is a `hidden beast` number, since 384 + 273 + 9 = 666.

It is not a de Polignac number, because 3842739 - 2¹ = 3842737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3842737) 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, 213477 + ... + 213494.

It is an arithmetic number, because the mean of its divisors is an integer number (925106).

Almost surely, 2^3842739 is an apocalyptic number.

3842739 is a deficient number, since it is larger than the sum of its proper divisors (1707897).

3842739 is a wasteful number, since it uses less digits than its factorization.

3842739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426977 (or 426974 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 3842739 is about 1960.2905396905. The cubic root of 3842739 is about 156.6319288204.

The spelling of 3842739 in words is "three million, eight hundred forty-two thousand, seven hundred thirty-nine".