426979 has 8 divisors (see below), whose sum is σ = 492128. Its totient is φ = 362880.

The previous prime is 426973. The next prime is 426997. The reversal of 426979 is 979624.

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

It is not a de Polignac number, because 426979 - 2³ = 426971 is a prime.

It is a super-2 number, since 2×426979² = 364622132882, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4⁹ + 2⁹ + 9 + 6⁶ + 7⁶ + 9 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426971) 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, 1099 + ... + 1435.

It is an arithmetic number, because the mean of its divisors is an integer number (61516).

2⁴²⁶⁹⁷⁹ is an apocalyptic number.

426979 is a deficient number, since it is larger than the sum of its proper divisors (65149).

426979 is a wasteful number, since it uses less digits than its factorization.

426979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525.

The product of its digits is 27216, while the sum is 37.

The square root of 426979 is about 653.4363014097. The cubic root of 426979 is about 75.3012476374.

It can be divided in two parts, 42 and 6979, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 426979 in words is "four hundred twenty-six thousand, nine hundred seventy-nine".