401490 has 32 divisors (see below), whose sum is σ = 1071360. Its totient is φ = 106992.

The previous prime is 401477. The next prime is 401507. The reversal of 401490 is 94104.

It is a super-2 number, since 2×401490² = 322388440200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 401490.

It is an unprimeable number.

401490 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474 + ... + 1013.

It is an arithmetic number, because the mean of its divisors is an integer number (33480).

2⁴⁰¹⁴⁹⁰ is an apocalyptic number.

401490 is an abundant number, since it is smaller than the sum of its proper divisors (669870).

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

401490 is a wasteful number, since it uses less digits than its factorization.

401490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503 (or 1497 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 401490 is about 633.6323855360. The cubic root of 401490 is about 73.7720033934.

Adding to 401490 its reverse (94104), we get a palindrome (495594).

The spelling of 401490 in words is "four hundred one thousand, four hundred ninety".