1379797219 has 4 divisors (see below), whose sum is σ = 1380364920. Its totient is φ = 1379229520.

The previous prime is 1379797213. The next prime is 1379797241. The reversal of 1379797219 is 9127979731.

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 1379797219 - 2¹¹ = 1379795171 is a prime.

It is a super-2 number, since 2×1379797219² = 3807680731120267922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1379797219.

It is not an unprimeable number, because it can be changed into a prime (1379797213) 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, 280189 + ... + 285070.

It is an arithmetic number, because the mean of its divisors is an integer number (345091230).

Almost surely, 2^1379797219 is an apocalyptic number.

1379797219 is a deficient number, since it is larger than the sum of its proper divisors (567701).

1379797219 is an equidigital number, since it uses as much as digits as its factorization.

1379797219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567700.

The product of its digits is 1500282, while the sum is 55.

The square root of 1379797219 is about 37145.6218012298. The cubic root of 1379797219 is about 1113.2817466167.

The spelling of 1379797219 in words is "one billion, three hundred seventy-nine million, seven hundred ninety-seven thousand, two hundred nineteen".