961879 has 2 divisors, whose sum is σ = 961880. Its totient is φ = 961878.

The previous prime is 961871. The next prime is 961927. The reversal of 961879 is 978169.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 961879 - 2³ = 961871 is a prime.

It is a super-2 number, since 2×961879² = 1850422421282, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480939 + 480940.

It is an arithmetic number, because the mean of its divisors is an integer number (480940).

2⁹⁶¹⁸⁷⁹ is an apocalyptic number.

961879 is a deficient number, since it is larger than the sum of its proper divisors (1).

961879 is an equidigital number, since it uses as much as digits as its factorization.

961879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 40.

The square root of 961879 is about 980.7543015455. The cubic root of 961879 is about 98.7128023121.

Subtracting 961879 from its reverse (978169), we obtain a triangular number (16290 = T₁₈₀).

The spelling of 961879 in words is "nine hundred sixty-one thousand, eight hundred seventy-nine".