1002279 has 4 divisors (see below), whose sum is σ = 1336376. Its totient is φ = 668184.

The previous prime is 1002263. The next prime is 1002289. The reversal of 1002279 is 9722001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9722001 = 3 ⋅3240667.

It is not a de Polignac number, because 1002279 - 2⁴ = 1002263 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002259) 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, 167044 + ... + 167049.

It is an arithmetic number, because the mean of its divisors is an integer number (334094).

2^1002279 is an apocalyptic number.

1002279 is a deficient number, since it is larger than the sum of its proper divisors (334097).

1002279 is an equidigital number, since it uses as much as digits as its factorization.

1002279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334096.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1002279 is about 1001.1388515086. The cubic root of 1002279 is about 100.0759090303.

It can be divided in two parts, 10022 and 79, that added together give a palindrome (10101).

The spelling of 1002279 in words is "one million, two thousand, two hundred seventy-nine".