7834985 has 4 divisors (see below), whose sum is σ = 9401988. Its totient is φ = 6267984.

The previous prime is 7834969. The next prime is 7834991. The reversal of 7834985 is 5894387.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5894387 = 367 ⋅16061.

It can be written as a sum of positive squares in 2 ways, for example, as 1183744 + 6651241 = 1088^2 + 2579^2 .

It is a cyclic number.

It is not a de Polignac number, because 7834985 - 2⁴ = 7834969 is a prime.

It is a super-2 number, since 2×7834985² = 122773979900450, which contains 22 as substring.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783494 + ... + 783503.

It is an arithmetic number, because the mean of its divisors is an integer number (2350497).

Almost surely, 2^7834985 is an apocalyptic number.

It is an amenable number.

7834985 is a deficient number, since it is larger than the sum of its proper divisors (1567003).

7834985 is a wasteful number, since it uses less digits than its factorization.

7834985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567002.

The product of its digits is 241920, while the sum is 44.

The square root of 7834985 is about 2799.1043210284. The cubic root of 7834985 is about 198.6153102968.

The spelling of 7834985 in words is "seven million, eight hundred thirty-four thousand, nine hundred eighty-five".