999987152 has 20 divisors (see below), whose sum is σ = 1969238916. Its totient is φ = 491796480.

The previous prime is 999987151. The next prime is 999987211. The reversal of 999987152 is 251789999.

It can be written as a sum of positive squares in 2 ways, for example, as 135862336 + 864124816 = 11656^2 + 29396^2 .

It is a super-2 number, since 2×999987152² = 1999948608330142208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 999987091 and 999987100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999987151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511313 + ... + 513264.

Almost surely, 2^999987152 is an apocalyptic number.

It is an amenable number.

999987152 is a deficient number, since it is larger than the sum of its proper divisors (969251764).

999987152 is a wasteful number, since it uses less digits than its factorization.

999987152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024646 (or 1024640 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 59.

The square root of 999987152 is about 31622.5734563144. The cubic root of 999987152 is about 999.9957173150.

The spelling of 999987152 in words is "nine hundred ninety-nine million, nine hundred eighty-seven thousand, one hundred fifty-two".