401860 has 24 divisors (see below), whose sum is σ = 858816. Its totient is φ = 157920.

The previous prime is 401839. The next prime is 401861. The reversal of 401860 is 68104.

It is a super-2 number, since 2×401860² = 322982919200, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1279 + ... + 1561.

It is an arithmetic number, because the mean of its divisors is an integer number (35784).

2⁴⁰¹⁸⁶⁰ is an apocalyptic number.

It is an amenable number.

401860 is an abundant number, since it is smaller than the sum of its proper divisors (456956).

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

401860 is a wasteful number, since it uses less digits than its factorization.

401860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 401860 is about 633.9242856998. The cubic root of 401860 is about 73.7946583874.

Adding to 401860 its reverse (68104), we get a palindrome (469964).

The spelling of 401860 in words is "four hundred one thousand, eight hundred sixty".