7919489 has 4 divisors (see below), whose sum is σ = 7925424. Its totient is φ = 7913556.

The previous prime is 7919479. The next prime is 7919491. The reversal of 7919489 is 9849197.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7919489 is a prime.

It is a super-2 number, since 2×7919489² = 125436612042242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7919449) 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, 74 + ... + 3980.

It is an arithmetic number, because the mean of its divisors is an integer number (1981356).

Almost surely, 2^7919489 is an apocalyptic number.

It is an amenable number.

7919489 is a deficient number, since it is larger than the sum of its proper divisors (5935).

7919489 is a wasteful number, since it uses less digits than its factorization.

7919489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5934.

The product of its digits is 163296, while the sum is 47.

The square root of 7919489 is about 2814.1586664579. The cubic root of 7919489 is about 199.3268116294.

The spelling of 7919489 in words is "seven million, nine hundred nineteen thousand, four hundred eighty-nine".