1389760417 has 4 divisors (see below), whose sum is σ = 1437683220. Its totient is φ = 1341837616.

The previous prime is 1389760391. The next prime is 1389760423. The reversal of 1389760417 is 7140679831.

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

It can be written as a sum of positive squares in 2 ways, for example, as 230766481 + 1158993936 = 15191^2 + 34044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1389760417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381760417) 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, 23961358 + ... + 23961415.

It is an arithmetic number, because the mean of its divisors is an integer number (359420805).

Almost surely, 2^1389760417 is an apocalyptic number.

It is an amenable number.

1389760417 is a deficient number, since it is larger than the sum of its proper divisors (47922803).

1389760417 is an equidigital number, since it uses as much as digits as its factorization.

1389760417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47922802.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 1389760417 is about 37279.4905678712. The cubic root of 1389760417 is about 1115.9549065275.

The spelling of 1389760417 in words is "one billion, three hundred eighty-nine million, seven hundred sixty thousand, four hundred seventeen".