279689414399 has 4 divisors (see below), whose sum is σ = 280451511264. Its totient is φ = 278927317536.

The previous prime is 279689414371. The next prime is 279689414401. The reversal of 279689414399 is 993414986972.

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

It is a cyclic number.

It is not a de Polignac number, because 279689414399 - 2³⁶ = 210969937663 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 (279689414339) 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, 381047882 + ... + 381048615.

It is an arithmetic number, because the mean of its divisors is an integer number (70112877816).

Almost surely, 2^279689414399 is an apocalyptic number.

279689414399 is a deficient number, since it is larger than the sum of its proper divisors (762096865).

279689414399 is an equidigital number, since it uses as much as digits as its factorization.

279689414399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762096864.

The product of its digits is 211631616, while the sum is 71.

The spelling of 279689414399 in words is "two hundred seventy-nine billion, six hundred eighty-nine million, four hundred fourteen thousand, three hundred ninety-nine".