787478259 has 4 divisors (see below), whose sum is σ = 1049971016. Its totient is φ = 524985504.

The previous prime is 787478249. The next prime is 787478273. The reversal of 787478259 is 952874787.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 787478259 - 2²⁹ = 250607347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 787478199 and 787478208.

It is not an unprimeable number, because it can be changed into a prime (787478249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131246374 + ... + 131246379.

It is an arithmetic number, because the mean of its divisors is an integer number (262492754).

Almost surely, 2^787478259 is an apocalyptic number.

787478259 is a deficient number, since it is larger than the sum of its proper divisors (262492757).

787478259 is a wasteful number, since it uses less digits than its factorization.

787478259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262492756.

The product of its digits is 7902720, while the sum is 57.

The square root of 787478259 is about 28062.0430296869. The cubic root of 787478259 is about 923.4488769926.

The spelling of 787478259 in words is "seven hundred eighty-seven million, four hundred seventy-eight thousand, two hundred fifty-nine".