396777426229 has 4 divisors (see below), whose sum is σ = 397634397376. Its totient is φ = 395920455084.

The previous prime is 396777426211. The next prime is 396777426239. The reversal of 396777426229 is 922624777693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 396777426229 - 2¹¹ = 396777424181 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 (396777426209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428484879 + ... + 428485804.

It is an arithmetic number, because the mean of its divisors is an integer number (99408599344).

Almost surely, 2^396777426229 is an apocalyptic number.

It is an amenable number.

396777426229 is a deficient number, since it is larger than the sum of its proper divisors (856971147).

396777426229 is an equidigital number, since it uses as much as digits as its factorization.

396777426229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856971146.

The product of its digits is 96018048, while the sum is 64.

The spelling of 396777426229 in words is "three hundred ninety-six billion, seven hundred seventy-seven million, four hundred twenty-six thousand, two hundred twenty-nine".