1285474879 has 8 divisors (see below), whose sum is σ = 1410478272. Its totient is φ = 1164203040.

The previous prime is 1285474871. The next prime is 1285474889. The reversal of 1285474879 is 9784745821.

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

It is not a de Polignac number, because 1285474879 - 2³ = 1285474871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285474871) 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, 932167 + ... + 933544.

It is an arithmetic number, because the mean of its divisors is an integer number (176309784).

Almost surely, 2^1285474879 is an apocalyptic number.

1285474879 is a deficient number, since it is larger than the sum of its proper divisors (125003393).

1285474879 is a wasteful number, since it uses less digits than its factorization.

1285474879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865777.

The product of its digits is 4515840, while the sum is 55.

The square root of 1285474879 is about 35853.5197574799. The cubic root of 1285474879 is about 1087.3128768453.

The spelling of 1285474879 in words is "one billion, two hundred eighty-five million, four hundred seventy-four thousand, eight hundred seventy-nine".