1487988999 has 12 divisors (see below), whose sum is σ = 2456362896. Its totient is φ = 850279392.

The previous prime is 1487988977. The next prime is 1487989033. The reversal of 1487988999 is 9998897841.

It is a de Polignac number, because none of the positive numbers 2^k-1487988999 is a prime.

It is a super-2 number, since 2×1487988999² = 4428222522290044002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1487988919) 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, 11809374 + ... + 11809499.

It is an arithmetic number, because the mean of its divisors is an integer number (204696908).

Almost surely, 2^1487988999 is an apocalyptic number.

1487988999 is a deficient number, since it is larger than the sum of its proper divisors (968373897).

1487988999 is a wasteful number, since it uses less digits than its factorization.

1487988999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23618886 (or 23618883 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 72.

The square root of 1487988999 is about 38574.4604498883. The cubic root of 1487988999 is about 1141.6506812000.

The spelling of 1487988999 in words is "one billion, four hundred eighty-seven million, nine hundred eighty-eight thousand, nine hundred ninety-nine".