487621769 has 2 divisors, whose sum is σ = 487621770. Its totient is φ = 487621768.

The previous prime is 487621741. The next prime is 487621817. The reversal of 487621769 is 967126784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385611769 + 102010000 = 19637^2 + 10100^2 .

It is a cyclic number.

It is not a de Polignac number, because 487621769 - 2⁸ = 487621513 is a prime.

It is a super-2 number, since 2×487621769² = 475549979205378722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (487621709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243810884 + 243810885.

It is an arithmetic number, because the mean of its divisors is an integer number (243810885).

Almost surely, 2^487621769 is an apocalyptic number.

It is an amenable number.

487621769 is a deficient number, since it is larger than the sum of its proper divisors (1).

487621769 is an equidigital number, since it uses as much as digits as its factorization.

487621769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 50.

The square root of 487621769 is about 22082.1595184891. The cubic root of 487621769 is about 787.0959816891.

The spelling of 487621769 in words is "four hundred eighty-seven million, six hundred twenty-one thousand, seven hundred sixty-nine".