3948771 has 4 divisors (see below), whose sum is σ = 5265032. Its totient is φ = 2632512.

The previous prime is 3948731. The next prime is 3948781. The reversal of 3948771 is 1778493.

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

It is not a de Polignac number, because 3948771 - 2¹⁰ = 3947747 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3948701) 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, 658126 + ... + 658131.

It is an arithmetic number, because the mean of its divisors is an integer number (1316258).

Almost surely, 2^3948771 is an apocalyptic number.

3948771 is a deficient number, since it is larger than the sum of its proper divisors (1316261).

3948771 is a wasteful number, since it uses less digits than its factorization.

3948771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316260.

The product of its digits is 42336, while the sum is 39.

The square root of 3948771 is about 1987.1514788762. The cubic root of 3948771 is about 158.0595166476.

The spelling of 3948771 in words is "three million, nine hundred forty-eight thousand, seven hundred seventy-one".