3977423 has 4 divisors (see below), whose sum is σ = 3984168. Its totient is φ = 3970680.

The previous prime is 3977419. The next prime is 3977429. The reversal of 3977423 is 3247793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3247793 = 643 ⋅5051.

It is a cyclic number.

It is not a de Polignac number, because 3977423 - 2² = 3977419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977429) 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, 2393 + ... + 3698.

It is an arithmetic number, because the mean of its divisors is an integer number (996042).

Almost surely, 2^3977423 is an apocalyptic number.

3977423 is a deficient number, since it is larger than the sum of its proper divisors (6745).

3977423 is an equidigital number, since it uses as much as digits as its factorization.

3977423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6744.

The product of its digits is 31752, while the sum is 35.

The square root of 3977423 is about 1994.3477630544. The cubic root of 3977423 is about 158.4408852517.

The spelling of 3977423 in words is "three million, nine hundred seventy-seven thousand, four hundred twenty-three".