7919491 has 2 divisors, whose sum is σ = 7919492. Its totient is φ = 7919490.

The previous prime is 7919479. The next prime is 7919533. The reversal of 7919491 is 1949197.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7919491 - 2⁵ = 7919459 is a prime.

It is not a weakly prime, because it can be changed into another prime (7929491) 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 as a sum of consecutive naturals, namely, 3959745 + 3959746.

It is an arithmetic number, because the mean of its divisors is an integer number (3959746).

Almost surely, 2^7919491 is an apocalyptic number.

7919491 is a deficient number, since it is larger than the sum of its proper divisors (1).

7919491 is an equidigital number, since it uses as much as digits as its factorization.

7919491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 40.

The square root of 7919491 is about 2814.1590218038. The cubic root of 7919491 is about 199.3268284088.

The spelling of 7919491 in words is "seven million, nine hundred nineteen thousand, four hundred ninety-one".