1004969987 has 8 divisors (see below), whose sum is σ = 1179578976. Its totient is φ = 838121472.

The previous prime is 1004969971. The next prime is 1004970007. The reversal of 1004969987 is 7899694001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1004969987 - 2⁴ = 1004969971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1004969947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1939838 + ... + 1940355.

It is an arithmetic number, because the mean of its divisors is an integer number (147447372).

Almost surely, 2^1004969987 is an apocalyptic number.

1004969987 is a deficient number, since it is larger than the sum of its proper divisors (174608989).

1004969987 is an equidigital number, since it uses as much as digits as its factorization.

1004969987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3880237.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 1004969987 is about 31701.2615995011. The cubic root of 1004969987 is about 1001.6539253562.

The spelling of 1004969987 in words is "one billion, four million, nine hundred sixty-nine thousand, nine hundred eighty-seven".