6453979 has 8 divisors (see below), whose sum is σ = 7630560. Its totient is φ = 5341056.

The previous prime is 6453973. The next prime is 6453989. The reversal of 6453979 is 9793546.

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

It is not a de Polignac number, because 6453979 - 2⁹ = 6453467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6453973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15694 + ... + 16099.

It is an arithmetic number, because the mean of its divisors is an integer number (953820).

Almost surely, 2^6453979 is an apocalyptic number.

6453979 is a deficient number, since it is larger than the sum of its proper divisors (1176581).

6453979 is a wasteful number, since it uses less digits than its factorization.

6453979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31829.

The product of its digits is 204120, while the sum is 43.

The square root of 6453979 is about 2540.4682639230. The cubic root of 6453979 is about 186.1840683708.

It can be divided in two parts, 645 and 3979, that added together give a square (4624 = 68²).

The spelling of 6453979 in words is "six million, four hundred fifty-three thousand, nine hundred seventy-nine".