1389497540877 has 12 divisors (see below), whose sum is σ = 2013115609024. Its totient is φ = 923533106760.

The previous prime is 1389497540831. The next prime is 1389497540911. The reversal of 1389497540877 is 7780457949831.

1389497540877 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 4 + 9 + 7 + 540 + 8 + 77 = 666.

It is not a de Polignac number, because 1389497540877 - 2¹⁰ = 1389497539853 is a prime.

It is a super-2 number, since 2×1389497540877² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389497540077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233212453 + ... + 233218410.

Almost surely, 2^{1389497540877} is an apocalyptic number.

It is an amenable number.

1389497540877 is a deficient number, since it is larger than the sum of its proper divisors (623618068147).

1389497540877 is a wasteful number, since it uses less digits than its factorization.

1389497540877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466431200 (or 466431197 counting only the distinct ones).

The product of its (nonzero) digits is 426746880, while the sum is 72.

The spelling of 1389497540877 in words is "one trillion, three hundred eighty-nine billion, four hundred ninety-seven million, five hundred forty thousand, eight hundred seventy-seven".