3993554 has 4 divisors (see below), whose sum is σ = 5990334. Its totient is φ = 1996776.

The previous prime is 3993547. The next prime is 3993557. The reversal of 3993554 is 4553993.

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

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 1385329 = 1615^2 + 1177^2 .

It is not an unprimeable number, because it can be changed into a prime (3993557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998387 + ... + 998390.

Almost surely, 2^3993554 is an apocalyptic number.

3993554 is a deficient number, since it is larger than the sum of its proper divisors (1996780).

3993554 is a wasteful number, since it uses less digits than its factorization.

3993554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996779.

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

The square root of 3993554 is about 1998.3878502433. The cubic root of 3993554 is about 158.6547894584.

It can be divided in two parts, 3993 and 554, that multiplied together give a palindrome (2212122).

The spelling of 3993554 in words is "three million, nine hundred ninety-three thousand, five hundred fifty-four".