609471491 has 8 divisors (see below), whose sum is σ = 619158720. Its totient is φ = 599833728.

The previous prime is 609471469. The next prime is 609471509. The reversal of 609471491 is 194174906.

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

It is not a de Polignac number, because 609471491 - 2¹⁴ = 609455107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609471431) 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, 12875 + ... + 37211.

It is an arithmetic number, because the mean of its divisors is an integer number (77394840).

Almost surely, 2^609471491 is an apocalyptic number.

609471491 is a deficient number, since it is larger than the sum of its proper divisors (9687229).

609471491 is a wasteful number, since it uses less digits than its factorization.

609471491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24733.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 609471491 is about 24687.4763999887. The cubic root of 609471491 is about 847.8476066152.

The spelling of 609471491 in words is "six hundred nine million, four hundred seventy-one thousand, four hundred ninety-one".