401598 has 40 divisors (see below), whose sum is σ = 937992. Its totient is φ = 128304.

The previous prime is 401593. The next prime is 401627. The reversal of 401598 is 895104.

It is a super-2 number, since 2×401598² = 322561907208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401593) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5961 + ... + 6027.

2⁴⁰¹⁵⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401598, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468996).

401598 is an abundant number, since it is smaller than the sum of its proper divisors (536394).

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

401598 is a wasteful number, since it uses less digits than its factorization.

401598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 401598 is about 633.7176027222. The cubic root of 401598 is about 73.7786176404.

It can be divided in two parts, 401 and 598, that added together give a palindrome (999).

The spelling of 401598 in words is "four hundred one thousand, five hundred ninety-eight".