7834991 has 2 divisors, whose sum is σ = 7834992. Its totient is φ = 7834990.

The previous prime is 7834969. The next prime is 7834993. The reversal of 7834991 is 1994387.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1994387) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7834991 - 2¹⁰ = 7833967 is a prime.

It is a super-2 number, since 2×7834991² = 122774167940162, which contains 22 as substring.

Together with 7834993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7834993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3917495 + 3917496.

It is an arithmetic number, because the mean of its divisors is an integer number (3917496).

Almost surely, 2^7834991 is an apocalyptic number.

7834991 is a deficient number, since it is larger than the sum of its proper divisors (1).

7834991 is an equidigital number, since it uses as much as digits as its factorization.

7834991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 7834991 is about 2799.1053927996. The cubic root of 7834991 is about 198.6153609964.

The spelling of 7834991 in words is "seven million, eight hundred thirty-four thousand, nine hundred ninety-one".