3916789 has 4 divisors (see below), whose sum is σ = 3942880. Its totient is φ = 3890700.

The previous prime is 3916751. The next prime is 3916799. The reversal of 3916789 is 9876193.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9876193 = 137 ⋅72089.

It is a cyclic number.

It is not a de Polignac number, because 3916789 - 2²¹ = 1819637 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 (3916799) 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, 12819 + ... + 13120.

It is an arithmetic number, because the mean of its divisors is an integer number (985720).

Almost surely, 2^3916789 is an apocalyptic number.

It is an amenable number.

3916789 is a deficient number, since it is larger than the sum of its proper divisors (26091).

3916789 is a wasteful number, since it uses less digits than its factorization.

3916789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26090.

The product of its digits is 81648, while the sum is 43.

The square root of 3916789 is about 1979.0879212405. The cubic root of 3916789 is about 157.6316393356.

The spelling of 3916789 in words is "three million, nine hundred sixteen thousand, seven hundred eighty-nine".