491009770 has 8 divisors (see below), whose sum is σ = 883817604. Its totient is φ = 196403904.

The previous prime is 491009767. The next prime is 491009777. The reversal of 491009770 is 77900194.

It can be written as a sum of positive squares in 2 ways, for example, as 476592561 + 14417209 = 21831^2 + 3797^2 .

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 (491009777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24550479 + ... + 24550498.

Almost surely, 2^491009770 is an apocalyptic number.

491009770 is a deficient number, since it is larger than the sum of its proper divisors (392807834).

491009770 is a wasteful number, since it uses less digits than its factorization.

491009770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49100984.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 491009770 is about 22158.7402620275. The cubic root of 491009770 is about 788.9146929851.

The spelling of 491009770 in words is "four hundred ninety-one million, nine thousand, seven hundred seventy".