3994453 has 2 divisors, whose sum is σ = 3994454. Its totient is φ = 3994452.

The previous prime is 3994429. The next prime is 3994481. The reversal of 3994453 is 3544993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2125764 + 1868689 = 1458^2 + 1367^2 .

It is a cyclic number.

It is not a de Polignac number, because 3994453 - 2⁵ = 3994421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3994493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997226 + 1997227.

It is an arithmetic number, because the mean of its divisors is an integer number (1997227).

Almost surely, 2^3994453 is an apocalyptic number.

It is an amenable number.

3994453 is a deficient number, since it is larger than the sum of its proper divisors (1).

3994453 is an equidigital number, since it uses as much as digits as its factorization.

3994453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 37.

The square root of 3994453 is about 1998.6127688975. The cubic root of 3994453 is about 158.6666936382. Note that the first 4 decimals are identical.

The spelling of 3994453 in words is "three million, nine hundred ninety-four thousand, four hundred fifty-three".