6899479 has 4 divisors (see below), whose sum is σ = 7059976. Its totient is φ = 6738984.

The previous prime is 6899461. The next prime is 6899483. The reversal of 6899479 is 9749986.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6899479 - 2⁵ = 6899447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6899429) 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, 80184 + ... + 80269.

It is an arithmetic number, because the mean of its divisors is an integer number (1764994).

Almost surely, 2^6899479 is an apocalyptic number.

6899479 is a deficient number, since it is larger than the sum of its proper divisors (160497).

6899479 is a wasteful number, since it uses less digits than its factorization.

6899479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160496.

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

The square root of 6899479 is about 2626.6859347855. The cubic root of 6899479 is about 190.3730344406.

The spelling of 6899479 in words is "six million, eight hundred ninety-nine thousand, four hundred seventy-nine".