1279090 has 16 divisors (see below), whose sum is σ = 2365272. Its totient is φ = 497664.

The previous prime is 1279087. The next prime is 1279093. The reversal of 1279090 is 909721.

It is an interprime number because it is at equal distance from previous prime (1279087) and next prime (1279093).

It can be written as a sum of positive squares in 4 ways, for example, as 908209 + 370881 = 953^2 + 609^2 .

It is not an unprimeable number, because it can be changed into a prime (1279093) 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, 1359 + ... + 2098.

2^1279090 is an apocalyptic number.

1279090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1279090 is a deficient number, since it is larger than the sum of its proper divisors (1086182).

1279090 is a wasteful number, since it uses less digits than its factorization.

1279090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 1279090 is about 1130.9686114124. The cubic root of 1279090 is about 108.5509681468.

It can be divided in two parts, 12790 and 90, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 1279090 in words is "one million, two hundred seventy-nine thousand, ninety".