7850389 has 4 divisors (see below), whose sum is σ = 7945056. Its totient is φ = 7755724.

The previous prime is 7850371. The next prime is 7850407. The reversal of 7850389 is 9830587.

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: 9830587 = 13 ⋅756199.

It is an interprime number because it is at equal distance from previous prime (7850371) and next prime (7850407).

It is a cyclic number.

It is not a de Polignac number, because 7850389 - 2⁵ = 7850357 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7850489) 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, 47209 + ... + 47374.

It is an arithmetic number, because the mean of its divisors is an integer number (1986264).

Almost surely, 2^7850389 is an apocalyptic number.

It is an amenable number.

7850389 is a deficient number, since it is larger than the sum of its proper divisors (94667).

7850389 is an equidigital number, since it uses as much as digits as its factorization.

7850389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94666.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 7850389 is about 2801.8545643912. The cubic root of 7850389 is about 198.7453878655.

The spelling of 7850389 in words is "seven million, eight hundred fifty thousand, three hundred eighty-nine".