999996953 has 4 divisors (see below), whose sum is σ = 1000060260. Its totient is φ = 999933648.

The previous prime is 999996919. The next prime is 999996983. The reversal of 999996953 is 359699999.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 359699999 = 103 ⋅3492233.

It can be written as a sum of positive squares in 2 ways, for example, as 310041664 + 689955289 = 17608^2 + 26267^2 .

It is a cyclic number.

It is not a de Polignac number, because 999996953 - 2²⁴ = 983219737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (999996913) 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, 13751 + ... + 46787.

It is an arithmetic number, because the mean of its divisors is an integer number (250015065).

Almost surely, 2^999996953 is an apocalyptic number.

It is an amenable number.

999996953 is a deficient number, since it is larger than the sum of its proper divisors (63307).

999996953 is a wasteful number, since it uses less digits than its factorization.

999996953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63306.

The product of its digits is 47829690, while the sum is 68.

The square root of 999996953 is about 31622.7284243469. The cubic root of 999996953 is about 999.9989843323.

The spelling of 999996953 in words is "nine hundred ninety-nine million, nine hundred ninety-six thousand, nine hundred fifty-three".