999938361 has 8 divisors (see below), whose sum is σ = 1338321600. Its totient is φ = 664090352.

The previous prime is 999938353. The next prime is 999938377. The reversal of 999938361 is 163839999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 999938361 - 2³ = 999938353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999938311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632886 + ... + 634463.

It is an arithmetic number, because the mean of its divisors is an integer number (167290200).

Almost surely, 2^999938361 is an apocalyptic number.

It is an amenable number.

999938361 is a deficient number, since it is larger than the sum of its proper divisors (338383239).

999938361 is a wasteful number, since it uses less digits than its factorization.

999938361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267615.

The product of its digits is 2834352, while the sum is 57.

The square root of 999938361 is about 31621.8019885015. The cubic root of 999938361 is about 999.9794532445.

The spelling of 999938361 in words is "nine hundred ninety-nine million, nine hundred thirty-eight thousand, three hundred sixty-one".