426488978 has 8 divisors (see below), whose sum is σ = 639874620. Its totient is φ = 213197440.

The previous prime is 426488957. The next prime is 426488989. The reversal of 426488978 is 879884624.

It can be written as a sum of positive squares in 2 ways, for example, as 399480169 + 27008809 = 19987^2 + 5197^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10823 + ... + 31146.

Almost surely, 2^426488978 is an apocalyptic number.

426488978 is a deficient number, since it is larger than the sum of its proper divisors (213385642).

426488978 is a wasteful number, since it uses less digits than its factorization.

426488978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47052.

The product of its digits is 6193152, while the sum is 56.

The square root of 426488978 is about 20651.6095740744. The cubic root of 426488978 is about 752.7243014456.

The spelling of 426488978 in words is "four hundred twenty-six million, four hundred eighty-eight thousand, nine hundred seventy-eight".