961899 has 8 divisors (see below), whose sum is σ = 1324032. Its totient is φ = 620520.

The previous prime is 961879. The next prime is 961927. The reversal of 961899 is 998169.

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

It is not a de Polignac number, because 961899 - 2⁸ = 961643 is a prime.

It is an Ulam number.

961899 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 961899.

It is not an unprimeable number, because it can be changed into a prime (961879) 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 in 7 ways as a sum of consecutive naturals, for example, 5079 + ... + 5264.

It is an arithmetic number, because the mean of its divisors is an integer number (165504).

2⁹⁶¹⁸⁹⁹ is an apocalyptic number.

961899 is a deficient number, since it is larger than the sum of its proper divisors (362133).

961899 is a wasteful number, since it uses less digits than its factorization.

961899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10377.

The product of its digits is 34992, while the sum is 42.

The square root of 961899 is about 980.7644977261. The cubic root of 961899 is about 98.7134864738.

The spelling of 961899 in words is "nine hundred sixty-one thousand, eight hundred ninety-nine".