3748993 has 4 divisors (see below), whose sum is σ = 3969540. Its totient is φ = 3528448.

The previous prime is 3748991. The next prime is 3749021. The reversal of 3748993 is 3998473.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3998473 = 31 ⋅128983.

It can be written as a sum of positive squares in 2 ways, for example, as 1507984 + 2241009 = 1228^2 + 1497^2 .

It is a cyclic number.

It is not a de Polignac number, because 3748993 - 2¹ = 3748991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3748991) 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, 110248 + ... + 110281.

It is an arithmetic number, because the mean of its divisors is an integer number (992385).

Almost surely, 2^3748993 is an apocalyptic number.

It is an amenable number.

3748993 is a deficient number, since it is larger than the sum of its proper divisors (220547).

3748993 is a wasteful number, since it uses less digits than its factorization.

3748993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220546.

The product of its digits is 163296, while the sum is 43.

The square root of 3748993 is about 1936.2316493643. The cubic root of 3748993 is about 155.3477174610.

The spelling of 3748993 in words is "three million, seven hundred forty-eight thousand, nine hundred ninety-three".