961822989 has 12 divisors (see below), whose sum is σ = 1410036576. Its totient is φ = 631644552.

The previous prime is 961822987. The next prime is 961823017. The reversal of 961822989 is 989228169.

It is not a de Polignac number, because 961822989 - 2¹ = 961822987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961822987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 796929 + ... + 798134.

It is an arithmetic number, because the mean of its divisors is an integer number (117503048).

Almost surely, 2^961822989 is an apocalyptic number.

It is an amenable number.

961822989 is a deficient number, since it is larger than the sum of its proper divisors (448213587).

961822989 is a wasteful number, since it uses less digits than its factorization.

961822989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595136 (or 1595133 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 961822989 is about 31013.2711754178. The cubic root of 961822989 is about 987.1088623254.

The spelling of 961822989 in words is "nine hundred sixty-one million, eight hundred twenty-two thousand, nine hundred eighty-nine".