999621338 has 4 divisors (see below), whose sum is σ = 1499432010. Its totient is φ = 499810668.

The previous prime is 999621323. The next prime is 999621353. The reversal of 999621338 is 833126999.

999621338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (999621323) and next prime (999621353).

It can be written as a sum of positive squares in only one way, i.e., 863595769 + 136025569 = 29387^2 + 11663^2 .

It is a super-3 number, since 3×999621338³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249905333 + ... + 249905336.

Almost surely, 2^999621338 is an apocalyptic number.

999621338 is a deficient number, since it is larger than the sum of its proper divisors (499810672).

999621338 is a wasteful number, since it uses less digits than its factorization.

999621338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499810671.

The product of its digits is 629856, while the sum is 50.

The square root of 999621338 is about 31616.7888628811. The cubic root of 999621338 is about 999.8737633983.

The spelling of 999621338 in words is "nine hundred ninety-nine million, six hundred twenty-one thousand, three hundred thirty-eight".