6979489 has 4 divisors (see below), whose sum is σ = 7614000. Its totient is φ = 6344980.

The previous prime is 6979487. The next prime is 6979493. The reversal of 6979489 is 9849796.

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.

It is a cyclic number.

It is not a de Polignac number, because 6979489 - 2¹ = 6979487 is a prime.

It is a super-2 number, since 2×6979489² = 97426533402242, which contains 22 as substring.

It is a Duffinian number.

6979489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6979481) 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, 317239 + ... + 317260.

It is an arithmetic number, because the mean of its divisors is an integer number (1903500).

Almost surely, 2^6979489 is an apocalyptic number.

It is an amenable number.

6979489 is a deficient number, since it is larger than the sum of its proper divisors (634511).

6979489 is a wasteful number, since it uses less digits than its factorization.

6979489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634510.

The product of its digits is 979776, while the sum is 52.

The square root of 6979489 is about 2641.8722527783. The cubic root of 6979489 is about 191.1060967702.

The spelling of 6979489 in words is "six million, nine hundred seventy-nine thousand, four hundred eighty-nine".