1063999400 has 48 divisors (see below), whose sum is σ = 2619324540. Its totient is φ = 400563200.

The previous prime is 1063999399. The next prime is 1063999459. The reversal of 1063999400 is 49993601.

It can be written as a sum of positive squares in 6 ways, for example, as 609201124 + 454798276 = 24682^2 + 21326^2 .

It is a super-2 number, since 2×1063999400² = 2264189446400720000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153071 + ... + 159870.

Almost surely, 2^1063999400 is an apocalyptic number.

1063999400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1063999400 is an abundant number, since it is smaller than the sum of its proper divisors (1555325140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1063999400 is a wasteful number, since it uses less digits than its factorization.

1063999400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312974 (or 312965 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 1063999400 is about 32619.0036635088. The cubic root of 1063999400 is about 1020.8935525029.

The spelling of 1063999400 in words is "one billion, sixty-three million, nine hundred ninety-nine thousand, four hundred".