3874621 has 4 divisors (see below), whose sum is σ = 3927772. Its totient is φ = 3821472.

The previous prime is 3874583. The next prime is 3874639. The reversal of 3874621 is 1264783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 881721 + 2992900 = 939^2 + 1730^2 .

It is a cyclic number.

It is not a de Polignac number, because 3874621 - 2⁹ = 3874109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878621) 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, 26466 + ... + 26611.

It is an arithmetic number, because the mean of its divisors is an integer number (981943).

Almost surely, 2^3874621 is an apocalyptic number.

It is an amenable number.

3874621 is a deficient number, since it is larger than the sum of its proper divisors (53151).

3874621 is an equidigital number, since it uses as much as digits as its factorization.

3874621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53150.

The product of its digits is 8064, while the sum is 31.

The square root of 3874621 is about 1968.4057000527. The cubic root of 3874621 is about 157.0639116644.

The spelling of 3874621 in words is "three million, eight hundred seventy-four thousand, six hundred twenty-one".