1279953 has 6 divisors (see below), whose sum is σ = 1848834. Its totient is φ = 853296.

The previous prime is 1279937. The next prime is 1279961. The reversal of 1279953 is 3599721.

It can be written as a sum of positive squares in only one way, i.e., 1272384 + 7569 = 1128^2 + 87^2 .

It is not a de Polignac number, because 1279953 - 2⁴ = 1279937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1279253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71100 + ... + 71117.

It is an arithmetic number, because the mean of its divisors is an integer number (308139).

2^1279953 is an apocalyptic number.

It is an amenable number.

1279953 is a deficient number, since it is larger than the sum of its proper divisors (568881).

1279953 is a wasteful number, since it uses less digits than its factorization.

1279953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142223 (or 142220 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 1279953 is about 1131.3500784461. The cubic root of 1279953 is about 108.5753757139.

The spelling of 1279953 in words is "one million, two hundred seventy-nine thousand, nine hundred fifty-three".