1961279 has 8 divisors (see below), whose sum is σ = 2060640. Its totient is φ = 1863136.

The previous prime is 1961257. The next prime is 1961321. The reversal of 1961279 is 9721691.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1961279 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961249) 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, 6029 + ... + 6345.

It is an arithmetic number, because the mean of its divisors is an integer number (257580).

2^1961279 is an apocalyptic number.

1961279 is a deficient number, since it is larger than the sum of its proper divisors (99361).

1961279 is a wasteful number, since it uses less digits than its factorization.

1961279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609.

The product of its digits is 6804, while the sum is 35.

The square root of 1961279 is about 1400.4567112196. The cubic root of 1961279 is about 125.1737104855.

It can be divided in two parts, 19612 and 79, that added together give a palindrome (19691).

The spelling of 1961279 in words is "one million, nine hundred sixty-one thousand, two hundred seventy-nine".