3978453 has 4 divisors (see below), whose sum is σ = 5304608. Its totient is φ = 2652300.

The previous prime is 3978451. The next prime is 3978473. The reversal of 3978453 is 3548793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3978453 - 2¹ = 3978451 is a prime.

It is a D-number.

It is a Duffinian number.

3978453 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663073 + ... + 663078.

It is an arithmetic number, because the mean of its divisors is an integer number (1326152).

Almost surely, 2^3978453 is an apocalyptic number.

It is an amenable number.

3978453 is a deficient number, since it is larger than the sum of its proper divisors (1326155).

3978453 is a wasteful number, since it uses less digits than its factorization.

3978453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326154.

The product of its digits is 90720, while the sum is 39.

The square root of 3978453 is about 1994.6059761266. The cubic root of 3978453 is about 158.4545607754.

The spelling of 3978453 in words is "three million, nine hundred seventy-eight thousand, four hundred fifty-three".