1379201489 has 4 divisors (see below), whose sum is σ = 1381333824. Its totient is φ = 1377069156.

The previous prime is 1379201441. The next prime is 1379201519. The reversal of 1379201489 is 9841029731.

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 1379201489 - 2²⁰ = 1378152913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1379201429) 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, 1065197 + ... + 1066490.

It is an arithmetic number, because the mean of its divisors is an integer number (345333456).

Almost surely, 2^1379201489 is an apocalyptic number.

It is an amenable number.

1379201489 is a deficient number, since it is larger than the sum of its proper divisors (2132335).

1379201489 is an equidigital number, since it uses as much as digits as its factorization.

1379201489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132334.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 1379201489 is about 37137.6020900650. The cubic root of 1379201489 is about 1113.1215030687.

The spelling of 1379201489 in words is "one billion, three hundred seventy-nine million, two hundred one thousand, four hundred eighty-nine".