999063553 has 4 divisors (see below), whose sum is σ = 1002276288. Its totient is φ = 995850820.

The previous prime is 999063539. The next prime is 999063557. The reversal of 999063553 is 355360999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999063553 is a prime.

It is a super-3 number, since 3×999063553³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 999063497 and 999063506.

It is not an unprimeable number, because it can be changed into a prime (999063557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1605901 + ... + 1606522.

It is an arithmetic number, because the mean of its divisors is an integer number (250569072).

It is a Proth number, since it is equal to 30489 ⋅ 2¹⁵ + 1 and 30489 < 2¹⁵.

Almost surely, 2^999063553 is an apocalyptic number.

It is an amenable number.

999063553 is a deficient number, since it is larger than the sum of its proper divisors (3212735).

999063553 is a wasteful number, since it uses less digits than its factorization.

999063553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212734.

The product of its (nonzero) digits is 984150, while the sum is 49.

The square root of 999063553 is about 31607.9666065377. The cubic root of 999063553 is about 999.6877535123.

The spelling of 999063553 in words is "nine hundred ninety-nine million, sixty-three thousand, five hundred fifty-three".