350000021 has 8 divisors (see below), whose sum is σ = 400818624. Its totient is φ = 299386080.

The previous prime is 349999999. The next prime is 350000041. The reversal of 350000021 is 120000053.

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

It is a de Polignac number, because none of the positive numbers 2^k-350000021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 349999957 and 350000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350000041) 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, 47480 + ... + 54353.

It is an arithmetic number, because the mean of its divisors is an integer number (50102328).

Almost surely, 2^350000021 is an apocalyptic number.

It is an amenable number.

350000021 is a deficient number, since it is larger than the sum of its proper divisors (50818603).

350000021 is a wasteful number, since it uses less digits than its factorization.

350000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102331.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 350000021 is about 18708.2874951183. The cubic root of 350000021 is about 704.7298873011.

Adding to 350000021 its reverse (120000053), we get a palindrome (470000074).

The spelling of 350000021 in words is "three hundred fifty million, twenty-one", and thus it is an aban number.