958440 has 96 divisors (see below), whose sum is σ = 3365280. Its totient is φ = 217728.

The previous prime is 958439. The next prime is 958459. The reversal of 958440 is 44859.

It is a Cunningham number, because it is equal to 979²-1.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 958398 and 958407.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 958440.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5799 + ... + 5961.

It is an arithmetic number, because the mean of its divisors is an integer number (35055).

2⁹⁵⁸⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 958440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682640).

958440 is an abundant number, since it is smaller than the sum of its proper divisors (2406840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

958440 is a wasteful number, since it uses less digits than its factorization.

958440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 958440 is about 978.9994892746. Note that the first 3 decimals coincide. The cubic root of 958440 is about 98.5950194084.

The spelling of 958440 in words is "nine hundred fifty-eight thousand, four hundred forty".