7945091 has 8 divisors (see below), whose sum is σ = 9905664. Its totient is φ = 6190920.

The previous prime is 7945087. The next prime is 7945099. The reversal of 7945091 is 1905497.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7945091 - 2² = 7945087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7945099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51515 + ... + 51668.

It is an arithmetic number, because the mean of its divisors is an integer number (1238208).

Almost surely, 2^7945091 is an apocalyptic number.

7945091 is a deficient number, since it is larger than the sum of its proper divisors (1960573).

7945091 is a wasteful number, since it uses less digits than its factorization.

7945091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103201.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 7945091 is about 2818.7037801089. The cubic root of 7945091 is about 199.5413741154.

It can be divided in two parts, 794 and 5091, that added together give a palindrome (5885).

The spelling of 7945091 in words is "seven million, nine hundred forty-five thousand, ninety-one".