1258879 has 4 divisors (see below), whose sum is σ = 1299520. Its totient is φ = 1218240.

The previous prime is 1258877. The next prime is 1258889. The reversal of 1258879 is 9788521.

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

It is a cyclic number.

It is not a de Polignac number, because 1258879 - 2¹ = 1258877 is a prime.

It is a plaindrome in base 14 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258871) 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, 20274 + ... + 20335.

It is an arithmetic number, because the mean of its divisors is an integer number (324880).

2^1258879 is an apocalyptic number.

1258879 is a deficient number, since it is larger than the sum of its proper divisors (40641).

1258879 is an equidigital number, since it uses as much as digits as its factorization.

1258879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40640.

The product of its digits is 40320, while the sum is 40.

The square root of 1258879 is about 1121.9977718338. The cubic root of 1258879 is about 107.9761893096.

The spelling of 1258879 in words is "one million, two hundred fifty-eight thousand, eight hundred seventy-nine".