3948791 has 8 divisors (see below), whose sum is σ = 4923264. Its totient is φ = 3076920.

The previous prime is 3948781. The next prime is 3948803. The reversal of 3948791 is 1978493.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-3948791 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 25565 + ... + 25718.

It is an arithmetic number, because the mean of its divisors is an integer number (615408).

Almost surely, 2^3948791 is an apocalyptic number.

3948791 is a deficient number, since it is larger than the sum of its proper divisors (974473).

3948791 is a wasteful number, since it uses less digits than its factorization.

3948791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51301.

The product of its digits is 54432, while the sum is 41.

The square root of 3948791 is about 1987.1565111989. The cubic root of 3948791 is about 158.0597834973.

The spelling of 3948791 in words is "three million, nine hundred forty-eight thousand, seven hundred ninety-one".