487923381 has 12 divisors (see below), whose sum is σ = 768849120. Its totient is φ = 295711080.

The previous prime is 487923377. The next prime is 487923383. The reversal of 487923381 is 183329784.

487923381 is a `hidden beast` number, since 487 + 92 + 3 + 3 + 81 = 666.

It is not a de Polignac number, because 487923381 - 2² = 487923377 is a prime.

It is a super-2 number, since 2×487923381² = 476138451452942322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487923383) 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, 2464161 + ... + 2464358.

It is an arithmetic number, because the mean of its divisors is an integer number (64070760).

Almost surely, 2^487923381 is an apocalyptic number.

It is an amenable number.

487923381 is a deficient number, since it is larger than the sum of its proper divisors (280925739).

487923381 is a wasteful number, since it uses less digits than its factorization.

487923381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4928536 (or 4928533 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 487923381 is about 22088.9877767181. The cubic root of 487923381 is about 787.2582308467.

The spelling of 487923381 in words is "four hundred eighty-seven million, nine hundred twenty-three thousand, three hundred eighty-one".