3938491 has 8 divisors (see below), whose sum is σ = 4190480. Its totient is φ = 3691008.

The previous prime is 3938489. The next prime is 3938513. The reversal of 3938491 is 1948393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3938491 - 2¹ = 3938489 is a prime.

It is a super-2 number, since 2×3938491² = 31023422714162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3938491.

It is not an unprimeable number, because it can be changed into a prime (3938471) 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, 775 + ... + 2911.

It is an arithmetic number, because the mean of its divisors is an integer number (523810).

Almost surely, 2^3938491 is an apocalyptic number.

3938491 is a deficient number, since it is larger than the sum of its proper divisors (251989).

3938491 is a wasteful number, since it uses less digits than its factorization.

3938491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253.

The product of its digits is 23328, while the sum is 37.

The square root of 3938491 is about 1984.5631761171. The cubic root of 3938491 is about 157.9222364754.

The spelling of 3938491 in words is "three million, nine hundred thirty-eight thousand, four hundred ninety-one".