7852991 has 4 divisors (see below), whose sum is σ = 8065272. Its totient is φ = 7640712.

The previous prime is 7852987. The next prime is 7852993. The reversal of 7852991 is 1992587.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7852991 - 2² = 7852987 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 (7852993) 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, 106085 + ... + 106158.

It is an arithmetic number, because the mean of its divisors is an integer number (2016318).

Almost surely, 2^7852991 is an apocalyptic number.

7852991 is a deficient number, since it is larger than the sum of its proper divisors (212281).

7852991 is a wasteful number, since it uses less digits than its factorization.

7852991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212280.

The product of its digits is 45360, while the sum is 41.

The square root of 7852991 is about 2802.3188612290. The cubic root of 7852991 is about 198.7673433964.

The spelling of 7852991 in words is "seven million, eight hundred fifty-two thousand, nine hundred ninety-one".