3954621 has 16 divisors (see below), whose sum is σ = 5785920. Its totient is φ = 2382720.

The previous prime is 3954617. The next prime is 3954623. The reversal of 3954621 is 1264593.

It is not a de Polignac number, because 3954621 - 2² = 3954617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3954623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9465 + ... + 9873.

It is an arithmetic number, because the mean of its divisors is an integer number (361620).

Almost surely, 2^3954621 is an apocalyptic number.

It is an amenable number.

3954621 is a deficient number, since it is larger than the sum of its proper divisors (1831299).

3954621 is a wasteful number, since it uses less digits than its factorization.

3954621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716.

The product of its digits is 6480, while the sum is 30.

The square root of 3954621 is about 1988.6228903440. The cubic root of 3954621 is about 158.1375318017.

The spelling of 3954621 in words is "three million, nine hundred fifty-four thousand, six hundred twenty-one".