999620353 has 2 divisors, whose sum is σ = 999620354. Its totient is φ = 999620352.

The previous prime is 999620341. The next prime is 999620371. The reversal of 999620353 is 353026999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 853983729 + 145636624 = 29223^2 + 12068^2 .

It is a cyclic number.

It is not a de Polignac number, because 999620353 - 2²⁵ = 966065921 is a prime.

It is not a weakly prime, because it can be changed into another prime (999620653) 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 as a sum of consecutive naturals, namely, 499810176 + 499810177.

It is an arithmetic number, because the mean of its divisors is an integer number (499810177).

Almost surely, 2^999620353 is an apocalyptic number.

It is an amenable number.

999620353 is a deficient number, since it is larger than the sum of its proper divisors (1).

999620353 is an equidigital number, since it uses as much as digits as its factorization.

999620353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 393660, while the sum is 46.

The square root of 999620353 is about 31616.7732857102. The cubic root of 999620353 is about 999.8734349820.

The spelling of 999620353 in words is "nine hundred ninety-nine million, six hundred twenty thousand, three hundred fifty-three".