1299878 has 8 divisors (see below), whose sum is σ = 1986768. Its totient is φ = 637624.

The previous prime is 1299877. The next prime is 1299887. The reversal of 1299878 is 8789921.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299877) 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, 6026 + ... + 6237.

It is an arithmetic number, because the mean of its divisors is an integer number (248346).

2^1299878 is an apocalyptic number.

1299878 is a deficient number, since it is larger than the sum of its proper divisors (686890).

1299878 is a wasteful number, since it uses less digits than its factorization.

1299878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12318.

The product of its digits is 72576, while the sum is 44.

The square root of 1299878 is about 1140.1219233047. The cubic root of 1299878 is about 109.1358740985.

The spelling of 1299878 in words is "one million, two hundred ninety-nine thousand, eight hundred seventy-eight".