999022653 has 20 divisors (see below), whose sum is σ = 1543831740. Its totient is φ = 643047552.

The previous prime is 999022639. The next prime is 999022667. The reversal of 999022653 is 356220999.

It is an interprime number because it is at equal distance from previous prime (999022639) and next prime (999022667).

It can be written as a sum of positive squares in 2 ways, for example, as 786970809 + 212051844 = 28053^2 + 14562^2 .

It is not a de Polignac number, because 999022653 - 2¹⁷ = 998891581 is a prime.

It is a super-2 number, since 2×999022653² = 1996092522414316818, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 999022599 and 999022608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999032653) 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 19 ways as a sum of consecutive naturals, for example, 210300 + ... + 214997.

It is an arithmetic number, because the mean of its divisors is an integer number (77191587).

Almost surely, 2^999022653 is an apocalyptic number.

It is an amenable number.

999022653 is a deficient number, since it is larger than the sum of its proper divisors (544809087).

999022653 is a wasteful number, since it uses less digits than its factorization.

999022653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425338 (or 425329 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 999022653 is about 31607.3196111281. The cubic root of 999022653 is about 999.6741114749.

The spelling of 999022653 in words is "nine hundred ninety-nine million, twenty-two thousand, six hundred fifty-three".