491970930 has 64 divisors (see below), whose sum is σ = 1329647616. Its totient is φ = 115416000.

The previous prime is 491970929. The next prime is 491970953. The reversal of 491970930 is 39079194.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13816 + ... + 34275.

It is an arithmetic number, because the mean of its divisors is an integer number (20775744).

Almost surely, 2^491970930 is an apocalyptic number.

491970930 is an abundant number, since it is smaller than the sum of its proper divisors (837676686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491970930 is a wasteful number, since it uses less digits than its factorization.

491970930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48143.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 491970930 is about 22180.4177147321. The cubic root of 491970930 is about 789.4291287814.

It can be divided in two parts, 491970 and 930, that multiplied together give a square (457532100 = 21390²).

The spelling of 491970930 in words is "four hundred ninety-one million, nine hundred seventy thousand, nine hundred thirty".