958421 has 4 divisors (see below), whose sum is σ = 991500. Its totient is φ = 925344.

The previous prime is 958393. The next prime is 958423. The reversal of 958421 is 124859.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124859 = 7 ⋅17837.

It can be written as a sum of positive squares in 2 ways, for example, as 168100 + 790321 = 410^2 + 889^2 .

It is a cyclic number.

It is not a de Polignac number, because 958421 - 2⁶ = 958357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 33049 = 958421 / (9 + 5 + 8 + 4 + 2 + 1).

It is a pancake number, because a pancake can be divided into 958421 parts by 1384 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 958421.

It is not an unprimeable number, because it can be changed into a prime (958423) 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, 16496 + ... + 16553.

It is an arithmetic number, because the mean of its divisors is an integer number (247875).

2⁹⁵⁸⁴²¹ is an apocalyptic number.

It is an amenable number.

958421 is a deficient number, since it is larger than the sum of its proper divisors (33079).

958421 is a wasteful number, since it uses less digits than its factorization.

958421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33078.

The product of its digits is 2880, while the sum is 29.

The square root of 958421 is about 978.9897854421. The cubic root of 958421 is about 98.5943678921.

The spelling of 958421 in words is "nine hundred fifty-eight thousand, four hundred twenty-one".