3938401 has 4 divisors (see below), whose sum is σ = 3942400. Its totient is φ = 3934404.

The previous prime is 3938393. The next prime is 3938437. The reversal of 3938401 is 1048393.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3938401 - 2³ = 3938393 is a prime.

It is a super-2 number, since 2×3938401² = 31022004873602, which contains 22 as substring.

It is an Ulam number.

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 3938401.

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 3 ways as a sum of consecutive naturals, for example, 640 + ... + 2878.

It is an arithmetic number, because the mean of its divisors is an integer number (985600).

Almost surely, 2^3938401 is an apocalyptic number.

It is an amenable number.

3938401 is a deficient number, since it is larger than the sum of its proper divisors (3999).

3938401 is a wasteful number, since it uses less digits than its factorization.

3938401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 3938401 is about 1984.5405009725. The cubic root of 3938401 is about 157.9210335519.

The spelling of 3938401 in words is "three million, nine hundred thirty-eight thousand, four hundred one".