3928743 has 60 divisors (see below), whose sum is σ = 7440048. Its totient is φ = 2021760.

The previous prime is 3928739. The next prime is 3928753. The reversal of 3928743 is 3478293.

It is not a de Polignac number, because 3928743 - 2² = 3928739 is a prime.

Its product of digits (36288) is a multiple of the sum of its prime divisors (64).

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 3928698 and 3928707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928703) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 95803 + ... + 95843.

Almost surely, 2^3928743 is an apocalyptic number.

3928743 is a deficient number, since it is larger than the sum of its proper divisors (3511305).

3928743 is a wasteful number, since it uses less digits than its factorization.

3928743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 64 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 3928743 is about 1982.1056984934. The cubic root of 3928743 is about 157.7918398533.

It can be divided in two parts, 39 and 28743, that added together give a palindrome (28782).

The spelling of 3928743 in words is "three million, nine hundred twenty-eight thousand, seven hundred forty-three".