3937842 has 16 divisors (see below), whose sum is σ = 8750880. Its totient is φ = 1312596.

The previous prime is 3937831. The next prime is 3937849. The reversal of 3937842 is 2487393.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3937797 and 3937806.

It is not an unprimeable number, because it can be changed into a prime (3937849) 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, 36408 + ... + 36515.

It is an arithmetic number, because the mean of its divisors is an integer number (546930).

Almost surely, 2^3937842 is an apocalyptic number.

3937842 is an abundant number, since it is smaller than the sum of its proper divisors (4813038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3937842 is a wasteful number, since it uses less digits than its factorization.

3937842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72934 (or 72928 counting only the distinct ones).

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

The square root of 3937842 is about 1984.3996573271. The cubic root of 3937842 is about 157.9135616503.

The spelling of 3937842 in words is "three million, nine hundred thirty-seven thousand, eight hundred forty-two".