3994451 has 4 divisors (see below), whose sum is σ = 4069872. Its totient is φ = 3919032.

The previous prime is 3994429. The next prime is 3994453. The reversal of 3994451 is 1544993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1544993 = 1039 ⋅1487.

It is not a de Polignac number, because 3994451 - 2¹⁰ = 3993427 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3994453) 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, 37631 + ... + 37736.

It is an arithmetic number, because the mean of its divisors is an integer number (1017468).

Almost surely, 2^3994451 is an apocalyptic number.

3994451 is a deficient number, since it is larger than the sum of its proper divisors (75421).

3994451 is an equidigital number, since it uses as much as digits as its factorization.

3994451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75420.

The product of its digits is 19440, while the sum is 35.

The square root of 3994451 is about 1998.6122685504. The cubic root of 3994451 is about 158.6666671571. Note that the first 5 decimals are identical.

The spelling of 3994451 in words is "three million, nine hundred ninety-four thousand, four hundred fifty-one".