905312930 has 8 divisors (see below), whose sum is σ = 1629563292. Its totient is φ = 362125168.

The previous prime is 905312899. The next prime is 905312939. The reversal of 905312930 is 39213509.

It can be written as a sum of positive squares in 2 ways, for example, as 904986889 + 326041 = 30083^2 + 571^2 .

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

It is not an unprimeable number, because it can be changed into a prime (905312939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45265637 + ... + 45265656.

Almost surely, 2^905312930 is an apocalyptic number.

905312930 is a deficient number, since it is larger than the sum of its proper divisors (724250362).

905312930 is a wasteful number, since it uses less digits than its factorization.

905312930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90531300.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 905312930 is about 30088.4185360414. The cubic root of 905312930 is about 967.3855019219.

The spelling of 905312930 in words is "nine hundred five million, three hundred twelve thousand, nine hundred thirty".