319400217449 has 4 divisors (see below), whose sum is σ = 321698060880. Its totient is φ = 317102374020.

The previous prime is 319400217401. The next prime is 319400217457. The reversal of 319400217449 is 944712004913.

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, and also an emirpimes, since its reverse is a distinct semiprime: 944712004913 = 233 ⋅4054557961.

It is a cyclic number.

It is not a de Polignac number, because 319400217449 - 2¹⁶ = 319400151913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (319400214449) 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, 1148921507 + ... + 1148921784.

It is an arithmetic number, because the mean of its divisors is an integer number (80424515220).

Almost surely, 2^319400217449 is an apocalyptic number.

It is an amenable number.

319400217449 is a deficient number, since it is larger than the sum of its proper divisors (2297843431).

319400217449 is a wasteful number, since it uses less digits than its factorization.

319400217449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297843430.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 319400217449 in words is "three hundred nineteen billion, four hundred million, two hundred seventeen thousand, four hundred forty-nine".