487199381 has 2 divisors, whose sum is σ = 487199382. Its totient is φ = 487199380.

The previous prime is 487199353. The next prime is 487199423. The reversal of 487199381 is 183991784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423742225 + 63457156 = 20585^2 + 7966^2 .

It is a cyclic number.

It is not a de Polignac number, because 487199381 - 2¹⁰ = 487198357 is a prime.

It is a super-2 number, since 2×487199381² = 474726473693566322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487199341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243599690 + 243599691.

It is an arithmetic number, because the mean of its divisors is an integer number (243599691).

Almost surely, 2^487199381 is an apocalyptic number.

It is an amenable number.

487199381 is a deficient number, since it is larger than the sum of its proper divisors (1).

487199381 is an equidigital number, since it uses as much as digits as its factorization.

487199381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 50.

The square root of 487199381 is about 22072.5934362050. The cubic root of 487199381 is about 786.8686497969.

The spelling of 487199381 in words is "four hundred eighty-seven million, one hundred ninety-nine thousand, three hundred eighty-one".