389487919501 has 4 divisors (see below), whose sum is σ = 389731199004. Its totient is φ = 389244640000.

The previous prime is 389487919481. The next prime is 389487919523. The reversal of 389487919501 is 105919784983.

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 261298858276 + 128189061225 = 511174^2 + 358035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389487919501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389487919531) 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, 121637350 + ... + 121640551.

It is an arithmetic number, because the mean of its divisors is an integer number (97432799751).

Almost surely, 2^389487919501 is an apocalyptic number.

It is an amenable number.

389487919501 is a deficient number, since it is larger than the sum of its proper divisors (243279503).

389487919501 is a wasteful number, since it uses less digits than its factorization.

389487919501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243279502.

The product of its (nonzero) digits is 19595520, while the sum is 64.

The spelling of 389487919501 in words is "three hundred eighty-nine billion, four hundred eighty-seven million, nine hundred nineteen thousand, five hundred one".