3994553 has 2 divisors, whose sum is σ = 3994554. Its totient is φ = 3994552.

The previous prime is 3994537. The next prime is 3994559. The reversal of 3994553 is 3554993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3736489 + 258064 = 1933^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 3994553 - 2⁴ = 3994537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3994559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997276 + 1997277.

It is an arithmetic number, because the mean of its divisors is an integer number (1997277).

Almost surely, 2^3994553 is an apocalyptic number.

It is an amenable number.

3994553 is a deficient number, since it is larger than the sum of its proper divisors (1).

3994553 is an equidigital number, since it uses as much as digits as its factorization.

3994553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72900, while the sum is 38.

The square root of 3994553 is about 1998.6377860933. The cubic root of 3994553 is about 158.6680176858.

The spelling of 3994553 in words is "three million, nine hundred ninety-four thousand, five hundred fifty-three".