1389762769924 has 27 divisors (see below), whose sum is σ = 2583638694847. Its totient is φ = 653987147264.

The previous prime is 1389762769897. The next prime is 1389762769949. The reversal of 1389762769924 is 4299672679831.

The square root of 1389762769924 is 1178882.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 68182609924 + 1321580160000 = 261118^2 + 1149600^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 40064652 + ... + 40099324.

Almost surely, 2^{1389762769924} is an apocalyptic number.

1389762769924 is the 1178882-nd square number.

It is an amenable number.

1389762769924 is a deficient number, since it is larger than the sum of its proper divisors (1193875924923).

1389762769924 is an frugal number, since it uses more digits than its factorization.

1389762769924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69384 (or 34692 counting only the distinct ones).

The product of its digits is 493807104, while the sum is 73.

The spelling of 1389762769924 in words is "one trillion, three hundred eighty-nine billion, seven hundred sixty-two million, seven hundred sixty-nine thousand, nine hundred twenty-four".