479891787 has 8 divisors (see below), whose sum is σ = 639958080. Its totient is φ = 319876680.

The previous prime is 479891777. The next prime is 479891791. The reversal of 479891787 is 787198974.

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

It is not a de Polignac number, because 479891787 - 2¹⁵ = 479859019 is a prime.

It is a super-2 number, since 2×479891787² = 460592254460106738, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 479891787.

It is not an unprimeable number, because it can be changed into a prime (479891717) 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, 25212 + ... + 39942.

It is an arithmetic number, because the mean of its divisors is an integer number (79994760).

Almost surely, 2^479891787 is an apocalyptic number.

479891787 is a deficient number, since it is larger than the sum of its proper divisors (160066293).

479891787 is a wasteful number, since it uses less digits than its factorization.

479891787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25593.

The product of its digits is 7112448, while the sum is 60.

The square root of 479891787 is about 21906.4325484548. The cubic root of 479891787 is about 782.9146849822.

The spelling of 479891787 in words is "four hundred seventy-nine million, eight hundred ninety-one thousand, seven hundred eighty-seven".