961489 has 4 divisors (see below), whose sum is σ = 970420. Its totient is φ = 952560.

The previous prime is 961487. The next prime is 961507. The reversal of 961489 is 984169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 984169 = 521 ⋅1889.

It can be written as a sum of positive squares in 2 ways, for example, as 640000 + 321489 = 800^2 + 567^2 .

It is a cyclic number.

It is not a de Polignac number, because 961489 - 2¹ = 961487 is a prime.

It is a super-2 number, since 2×961489² = 1848922194242, which contains 22 as substring.

It is a Duffinian number.

961489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (961487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4302 + ... + 4519.

It is an arithmetic number, because the mean of its divisors is an integer number (242605).

2⁹⁶¹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

961489 is a deficient number, since it is larger than the sum of its proper divisors (8931).

961489 is a wasteful number, since it uses less digits than its factorization.

961489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8930.

The product of its digits is 15552, while the sum is 37.

The square root of 961489 is about 980.5554548316. Note that the first 3 decimals coincide. The cubic root of 961489 is about 98.6994592627.

The spelling of 961489 in words is "nine hundred sixty-one thousand, four hundred eighty-nine".