3977543 has 8 divisors (see below), whose sum is σ = 4097808. Its totient is φ = 3858624.

The previous prime is 3977527. The next prime is 3977549. The reversal of 3977543 is 3457793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3977543 - 2⁴ = 3977527 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3977497 and 3977506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9821 + ... + 10217.

It is an arithmetic number, because the mean of its divisors is an integer number (512226).

Almost surely, 2^3977543 is an apocalyptic number.

3977543 is a deficient number, since it is larger than the sum of its proper divisors (120265).

3977543 is a wasteful number, since it uses less digits than its factorization.

3977543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673.

The product of its digits is 79380, while the sum is 38.

The square root of 3977543 is about 1994.3778478513. The cubic root of 3977543 is about 158.4424786381.

It can be divided in two parts, 39775 and 43, that multiplied together give a triangular number (1710325 = T₁₈₄₉).

The spelling of 3977543 in words is "three million, nine hundred seventy-seven thousand, five hundred forty-three".