426939788399 has 4 divisors (see below), whose sum is σ = 426950951664. Its totient is φ = 426928625136.

The previous prime is 426939788369. The next prime is 426939788413. The reversal of 426939788399 is 993887939624.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426939788399 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 (426939788369) 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, 5524067 + ... + 5600820.

It is an arithmetic number, because the mean of its divisors is an integer number (106737737916).

Almost surely, 2^426939788399 is an apocalyptic number.

426939788399 is a deficient number, since it is larger than the sum of its proper divisors (11163265).

426939788399 is a wasteful number, since it uses less digits than its factorization.

426939788399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11163264.

The product of its digits is 1269789696, while the sum is 77.

The spelling of 426939788399 in words is "four hundred twenty-six billion, nine hundred thirty-nine million, seven hundred eighty-eight thousand, three hundred ninety-nine".