3921494 has 16 divisors (see below), whose sum is σ = 6048000. Its totient is φ = 1906344.

The previous prime is 3921451. The next prime is 3921497. The reversal of 3921494 is 4941293.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3921494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921497) 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, 19607 + ... + 19805.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

Almost surely, 2^3921494 is an apocalyptic number.

3921494 is a deficient number, since it is larger than the sum of its proper divisors (2126506).

3921494 is a wasteful number, since it uses less digits than its factorization.

3921494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427.

The product of its digits is 7776, while the sum is 32.

The square root of 3921494 is about 1980.2762433560. The cubic root of 3921494 is about 157.6947318409.

The spelling of 3921494 in words is "three million, nine hundred twenty-one thousand, four hundred ninety-four".